This is the Grade 5 Mathematics Self-Learning Module for Quarter 3, Module 3: Identifying the Base, Percentage and Rate in a Problem. It is for Grade 5 learners studying at home or in class, and for the parents and teachers who guide them. After the module, learners can tell which number in a word problem is the base, the rate, and the percentage, and then solve for the missing one.
The module was developed by the Department of Education, Region VIII (First Edition, 2020). It builds on the previous module, where learners defined percentage, rate, and base.
On this page 8 sections
What learners will learn
After going through this module, learners are expected to:
- identify the base, percentage, and rate in word problems;
- value base, percentage, and rate to understand daily life experiences; and
- solve for the base, percentage, and rate.
The three key terms
The module starts by reviewing three words that appear in every percent problem:
| Term | What it means | How to spot it |
|---|---|---|
| Base (B) | The whole or total | The full amount, such as the original price or the total number of pages |
| Rate (R) | The percent | The number with the percent (%) symbol |
| Percentage (P) | The part of the whole | The amount that is a portion of the base |
The module notes that “percent” comes from a Latin word meaning “out of one hundred.” For example, in “75% of 40 is 30,” the base is 40, the rate is 75%, and the percentage is 30.
Techan’s Triangle and the three formulas
The module uses a memory aid called Techan’s Triangle. P sits at the top, with R and B at the bottom. The top is divided by one of the bottom letters, and the two bottom letters are multiplied. This gives three formulas:
- Percentage = Rate × Base (P = R × B)
- Rate = Percentage ÷ Base (R = P ÷ B)
- Base = Percentage ÷ Rate (B = P ÷ R)
To use it, cover the letter you are looking for and work with the two letters that remain.
Worked examples from the module
The module solves each problem step by step: list what is given, decide what is being asked, then name what each number represents before computing.
- Finding the percentage (a discount): Graham crackers cost P60.00 and are on sale at 10% off. The savings are 10% of P60, so 10/100 × 60 = P6. The module also solves this with a proportion (n:60 = 10:100, so n = 6) and with a bar model of ten 10% parts.
- Finding the base: Jessy ate 4 parts of a chocolate bar, which is 80% of the bar. Base = 4 ÷ 80% = 4 ÷ 0.80 = 5, so the bar has 5 parts.
- Discount and amount to pay: A sweatshirt costs P2 750 and is 20% off. The discount is 20/100 × 2 750 = P550, and the amount paid is P2 750 − P550 = P2 200.
- Short practice items: 20% of 30 is 6 (finding the percentage); if 14 is 5% of a number, the number is 280 (finding the base); 30 is 25% of 120 (finding the rate, since 30/120 = 1/4 = 25/100).
The module also shows real-life uses, such as identifying the base, rate, and interest in a bank deposit: a principal of P15 000 earning P150 at 1% a month has a base of P15 000, a rate of 1%, and a percentage of P150.
Activities in this module
- What I Know – a multiple-choice pretest.
- What’s In – a review of percentage, rate, and base with Techan’s Triangle.
- What’s New and What is It – the word problems and step-by-step solutions above.
- Activity 1: Rate Me One More Time! – identify the base, rate, and percentage in number sentences.
- Activity 2: Find Me in Words! – identify the three parts in problems written in words.
- Activity 3: What are Missing on Me! – find the missing base, rate, or percentage and show solutions.
- What I Have Learned – explain the process in your own words and solve three items.
- What I Can Do – a bank-interest problem, plus collecting examples of percents from food packages, advertisements, newspapers, and bank notices.
- Assessment – a multiple-choice post-test.
- Additional Activities – find percents of numbers using bar models.
How to use this module
- Learners: Start with the pretest to check what you already know. Then work through each part in order. Write your answers and solutions on a separate sheet of paper, not on the module. Use Techan’s Triangle as your guide, and check your work with the answer key at the end honestly, only after answering.
- Parents: Help your child read each word problem slowly and ask, “Which number is the whole? Which has the % sign? Which is the part?” The module’s daily-life examples, like store discounts, are easy to practice while shopping.
- Teachers: Use the pretest to see who needs help, and the post-test to check mastery. The bar models and proportion method give alternative routes for learners who find the formulas hard. Review the answer key before sharing it with learners.
Frequently asked questions
What grade and quarter is this module for?
It is the Grade 5 Mathematics Self-Learning Module for Quarter 3, Module 3, titled Identifying the Base, Percentage and Rate in a Problem.
What is the difference between base, rate, and percentage?
The base is the whole or total, the rate is the number with the percent (%) symbol, and the percentage is the part of the whole. In 20% of 80 is 16, the base is 80, the rate is 20%, and the percentage is 16.
What is Techan’s Triangle?
It is a memory aid with P at the top and R and B at the bottom. It shows that P = R × B, R = P ÷ B, and B = P ÷ R.
Does the module have an answer key?
Yes. It has answers for the pretest, the review, all three activities, What I Have Learned, What I Can Do, the assessment, and the additional activities.
How do I find the base when I know the percentage and rate?
Divide the percentage by the rate. For example, if 14 is 5% of a number, the number is 14 ÷ 5/100 = 280.
Full text of the module
The text below is a transcription of the PDF above, as printed.
Mathematics Quarter 3 – Module 3: Identifying the Base, Percentage and Rate in a Problem
CO_Q3_Mathematics 5_ Module 3
Copyright and Development Team
Mathematics – Grade 5 Alternative Delivery Mode Quarter 3 – Module 3: Identifying the Base, Percentage and Rate in a Problem First Edition, 2020
Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties.
Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them.
Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio
Development Team of the Module
Writers: Frederick S. Cruz Editors: Nian L. Atis, Veronica Afable Reviewers: Renato S. Cagomoc, Rolando Lacbo, Joshua Sherwin T. Lim, Langie Boy C. Enriquez Illustrator: Salvacion Sarmiento Layout Artist: Razle L. Jabelo, Maelyne L. Yambao Management Team: Ma. Gemma M. Ledesma, Arnulfo B. Balane, Rosemarie M. Guino, Joy B. Bihag, Ryan R. Tiu, Sarah S. Cabaluna, Thelma Cabadasan-Quitalig, Elena S. De Luna, Renato S. Cagomoc, Noel E. Sagayap, Geraldine P. Sumbise, Joshua Sherwin T. Lim
Printed in the Philippines by ________________________
Department of Education – Region VIII
Office Address: Deped Regional Office No. 8, Candahug, Palo, Leyte Telefax: (053)-832-2997 E-mail Address: region8@deped.gov.ph
Mathematics
Quarter 3 – Module 3: Identifying the Base, Percentage and Rate in a Problem
Introductory Message
This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson.
Each SLM is composed of different parts. Each part shall guide you step-by-step as you discover and understand the lesson prepared for you.
Pre-tests are provided to measure your prior knowledge on lessons in each SLM. This will tell you if you need to proceed on completing this module or if you need to ask your facilitator or your teacher’s assistance for better understanding of the lesson. At the end of each module, you need to answer the post-test to self-check your learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these.
In addition to the material in the main text, Notes to the Teacher are also provided to our facilitators and parents for strategies and reminders on how they can best help you on your home-based learning.
Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task.
If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator.
Thank you.
What I Need to Know
Hello, Mathletes! In this module, you will be able to gain understanding and test your ability in identifying and solving for the base, percentage and rate in a problem.
As mentioned in the previous module, percentages can be seen almost everywhere – in food shops, grocery stores, and even in advertisements. Mastery to identify the base, percentage and rate in a problem is a skill that will help us in daily situations. In this module, you will be taught on the step-by-step process in identifying and solving percentage, rate or percent and base in a word problem. Challenging activities are provided in this module for you to strengthen your understanding of the lesson.
After going through this module, you are expected to:
- identify the base, percentage, and rate in word problems;
- value base, percentage and rate to understand daily life experiences; and
- solve for the base, percentage and rate.
Are you ready to learn? Wait up! Let us check first what you know about percentage, rate or percent and base.
What I Know
Directions: Read and understand the given. Choose the letter that corresponds to the correct answer. Write your answer and show your solutions on a separate sheet of paper.
Asyong makes a monthly donation of P1 000.00 for the calamity victims through a reputable charity organization. If his donation is 5% of his monthly salary, how much of his salary? Which of the following is asked in the problem?
a. Base
b. Rate
c. Percentage
d. ProportionA farmer harvested 130 sacks of corn. He sold 85% of his harvest. How many sacks of corn did he sell? Which of the following is asked in the problem?
a. Base
b. Rate
c. Percentage
d. ProportionPrincess, a grade five pupil, had a notebook with 30 pages. If she used 10 pages, what percent of the pages of the notebook did she use? Which of the following is asked in the problem?
a. Base
b. Rate
c. Percentage
d. ProportionWhich of the following can be done in solving for the percentage?
a. Add the rate and the base
b. Multiply the rate and the base
c. Divide the rate by the base
d. Subtract the rate from the base
Lesson 1: Identifying the Base, Percentage and Rate in a Problem
In order to identify the base, percentage and rate in a problem, you need to master the skills on defining percentage, rate or percent and base. Moreover, comprehension in reading word problems is a must needed skill that will help you understand the lesson. Let us continue our journey to identify the base, percentage and rate in a problem.
Are you eager to learn? Let’s tune up our brains and get started.
What’s In
Can you still remember the steps in defining percentage, rate and base?
Percentages are like fractions and decimals. They can be used to describe the proportion of a whole and its parts. Percentage is a term from a Latin word which means “out of one hundred”. We may therefore consider percentage as part of a whole. That whole or total is the base. The number with the percent (%) symbol is the rate.
Let us first review your last lesson about the definition of rate, base, and percentage using the Techan’s Triangle shown below. The percentage (P) is on the top of the triangle. The rate (R) and the base (B) are in the bottom.
The P is on top because it represents the idea that it should be divided by either R or B, depending on what are given. The B and R are at the bottom to suggest that both can be multiplied.
Thus,
P = R multiplied by B R = P divided by B B = P divided by R.
Consider the sample situation that follows.
[chart: triangle diagram; Techan’s Triangle] Top: P Bottom left: R; Bottom right: B
P = R × B Rate = 10% Base = P60 Percentage = 10% × P 60.00 = 10/100 × 60 = 600/100 = P6
Example 1
Emmie is excited to go to the supermarket with her mother. Their shopping list includes condensed milk, full-cream milk, Graham crackers and mangoes. The Graham crackers costs P 60.00 per pack, but is being sold at 10% discount! How much will she save per pack if she buys the Graham crackers?
Note that the price of the Graham crackers is now 10% less than the original price. This means that 10% of the original price is the savings that Emmie will get. Therefore, we need to get “10% of P 60.00.” It is the percentage.
From the problem above, we have learned that 10% of P60 is P6. Note that 10% is the rate (the expression with the % symbol). The percentage (part of the whole or part of P60.00) is P6. The base (whole or total) is P 60.
Alternatively, we may write a proportion and solve for the unknown (n).
n out of 60 = 10 out of 100 n:60 = 10:100
By the cross-product rule, we have the following.
100 × n = 60 × 10 100n = 600 100n / 100 = 600 / 100 n = 6
[chart: bar model; New Price, Discount, Original Price = P60; 10 equal segments each labeled 10%; Each segment = P60 ÷ 10 = P6]
Therefore, P 6 will be deducted from the original price of the Graham crackers. It will also be the amount that Emmie will save. Using proportion or bar model above is also useful in solving the problem.
The given problem is an example of solving for the percentage.
Try the problem below.
Directions: Read and understand the problem carefully. Write your answers on a separate sheet of paper.
Teacher Joel gave each group 30 sheets of colored paper for their activity in Arts. If one of the groups used 6 sheets of colored paper, what percent of the sheets of colored paper did they use?
Which of the following is asked in the problem?
A. Percentage B. Rate C. Base D. ProportionIdentify the base, rate and percentage.
What’s New
From the previous lesson, you were taught how to define percentage, rate or percent and base. This time, this module is going to teach you how to identify the rate, percentage and base in a problem.
Recall that the base can be considered as the whole or total. The percentage is the part of the whole. The rate or percent is represented by a percent sign (%).
Read carefully the problem below.
Jessy’s family received a package from her elder sister in Canada. The box contains bags of candies and chocolates in different flavors. Jessy opened a bag and picked one chocolate bar in purple packaging. She ate 4 parts of the chocolate bar. This means she ate 80% of the chocolate bar. How many parts are there in the chocolate bar?
[illustration: Jessy holding a chocolate bar beside an open box on a table]
Can you identify the base, percentage and rate in the problem? Are there missing information? What are those, if any?
Go to the next page for you to solve the problem above. You are doing well. Keep going!
What is It
Now, let’s discuss the earlier word problem.
Example 1
Jessy ate 4 parts of a chocolate bar. This means she ate 80% of the chocolate bar. How many parts are there in the chocolate bar?
First Step: What are given in the problem?
The given are 4 parts of the chocolate bar, which represents 80% of chocolate bar.
Second Step: What do we need to find out?
We need to find out the total part of the whole chocolate bar which is the base.
Third Step: What does 4 represent?
It represents the percentage (or part of the whole).
Fifth Step: What does 80% represent?
It represents the rate (80 out of 100).
Now, let the whole part of chocolate bar be n.
So, we write B = P divided by R.
Base = Percentage divided by Rate
n = 4 ÷ 80%
n = 4 ÷ 80/100 = 4 × 100/80 = 4×100/80 = 5
Therefore, the chocolate bar has 5 parts, in which 4 parts have been eaten by Emmie. The bar model is also helpful in solving the problem.
[chart: bar model; Whole Chocolate bar. Labels above: 80%. Ten cells numbered 1, 2, 3, 4 in the first four cells, the rest blank. Labels below each cell: 10% (repeated for all ten cells).]
Using the Techan’s Triangle
We have the given: Rate = 80% Percentage = 4 Base = ?
[chart: Techan’s Triangle; top 4, lower left 80%, lower right B]
So, from the Techan’s Triangle, the base is unknown. We can find the base by dividing the percentage by the rate. Hence:
B = 4 / 80% = 4 / 0.80 = 5
Example 2
One day, shirts at Ganda Department Store were marked with 20% off labels. Noel bought a sweat shirt with an original price of P2 750. How much did he save after the discount was applied? How much did he pay to the cashier?
First Step: What are given in the problem?
The original price of the shirt was P2 750. It was on sale at 20% off.
Second Step: What do we need to find out?
We need to find out the amount of discount (percentage) and the amount he had to pay to the cashier.
Third Step: What does P2 750 represent?
It represents the base (or the whole).
Fifth Step: What does 20% represent?
It represents the rate (20 out of 100).
[chart: Techan’s Triangle; top P, lower left R, lower right B]
We are now ready to solve the problem.
Let the amount saved from the 20% discount be n (percentage).
So, we write
Percentage = rate × base.
n = 20% of 2 750
= 20/100 × 2 750
= 55 000 ÷ 100
= 550
Each = P2 750 ÷ 5 = P 550
[chart: bar model; 100% over five boxes, each labeled 20%; the bracket under the first box is labeled Discount and the remaining four boxes New Price; right side labeled = P2 750; a separate box labeled Each = P2 750 ÷ 5 = P 550]
Thus, Noel saved an amount of P550.00 after the 20% discount was applied to the original price. The bar model can also be used to answer the problem.
Now, to determine the amount to pay to the cashier, the following is done.
P2750.00 – P550.00 = P2200.00
Original Price, Discount, New price or the amount to be paid to the cashier
Therefore, the discount is P 550. The amount to pay to the cashier is P 2 200.
Example 3
What is 20% of 30?
Solution: The base is 30. The rate is 20%. The unknown is the percentage.
P = R × B
Percentage = Rate × base
= 20% × 30
= 20/100 × 30 = 600/100 = 6
Hence, the 20% of 30 is 6.
[chart: Techan’s Triangle; top P, lower left R, lower right B]
Example 4
If 14 is 5% of a certain number, what is the number?
Solution: The percentage is 14. The rate is 5%. The unknown is the base.
B = P divided by R
Base = Percentage divided by the Rate
= 14 ÷ 5%
= 14 ÷ 5/100
= 14 × 100/5 = 1400/5 = 280
[chart: Techan’s Triangle; top P, lower left R, lower right B]
Therefore, the number is 280. It can be checked that 5% of 280 is 14.
Example 5
What percent of 120 is 30??
Solution: The base is 120. The percentage is 30. The unknown is the rate.
R = P divided by B
Rate = Percentage divided the Base
= 30 ÷ 120
= 30/120 = 1/4 = 1×25/4×25 = 25/100 = 25%
[chart: Techan’s Triangle; top P, lower left R, lower right B]
Thus, the rate is 25%. It is true that 25% of 120 is 30.
Congratulations! You are doing a good job and you’ve reached this far. Now, try to do the independent activities that follow.
What’s More
Activity 1 Rate Me One More Time!
Directions: On your answer sheet, copy and complete the table below. Identify the base, rate and percentage. One is done for you.
| Given | Base | Rate | Percentage |
|---|---|---|---|
| 1) 75% of 40 is 30. | 40 | 75% | 30 |
| 2) 20% of 80 is 16. | |||
| 3) 60% of 50 is 30. | |||
| 4) 27 is 45% of 60. | |||
| 5) 17 is 85% of 20. | |||
| 6) 13% of 300 is 39. |
Activity 2 Find Me in Words!
Directions: On your answer sheet, copy and complete the table below. Identify the base, rate and percentage in the given. One is done for you.
| Given | Base | Rate | Percentage |
|---|---|---|---|
| 1) | 200 | Unknown | 16 |
| 2) | |||
| 3) | |||
| 4) | |||
| 5) | |||
| 6) |
- Sixteen is what percent of two hundred?
- Find one hundred fifty percent of ninety-eight.
- A cellphone casing is on sale for 85 percent off the regular price. If its original price is forty pesos, how much is the new sale price?
- The Calbayog City basketball team won eight percent of their games. If they played twenty-five games, how many games did they win?
- Eighty is what percent of four hundred?
- What is 63% of 100?
Activity 3 What are Missing on Me!
Directions: On your answer sheet, copy and complete the table below. Show your solutions. You may use the Techan’s Triangle as your guide.
| Problem | Base | Rate | Percentage |
|---|---|---|---|
| 1 | 500 | 25% | |
| 2 | P1500 | 5% | |
| 3 | P50 | P5.00 | |
| 4 | 6% | P300.00 | |
| 5 | P4 000 | P 1 000 | |
| 6 | P 100 | P5.00 |
[chart: Techan’s Triangle; top P, lower left R, lower right B]
The solution for Problem 1 is given below.
Percentage = Rate × Base
25% of P 500 = 25/100 × P 500 = P 125.
Hence, 125 must be placed in percentage column in Problem 1.
What I Have Learned
A. In your own words, how are you going to identify the base, percentage and rate in a word problem? Consider the given below for your explanation.
The 50% of 300 is 150.
Identify the base, rate and percentage.
B. Using your words, discuss on how to solve the percentage, rate or base in a given problem. Solve the following. You may use the Techan’s Triangle as your guide.
- What is 50% of 400?
- Twenty is what percent of 100?
- If 10 is 25% of a number, what is the number?
[chart: Techan’s Triangle; top P, lower left R, lower right B]
Excellent! You are almost done. Keep going!
What I Can Do
You have reached this far. Good job! Now let us try some real-life situations where you can apply what you have learned in identifying the base, percentage and rate in a problem.
Remember that percentage can be viewed as a part of a whole. That whole or total is the base. The number with percent (%) symbol is the rate.
A. Read carefully the word problem below. Identify the percentage, base and rate. Write your answers on a separate sheet of paper.
Mrs. Gomez opens an account in East West Bank. She puts a principal amount of P15 000 that will earn an interest of P150 after a month at a rate of 1% monthly.
a. What are the given data in the problem? b. Which of the data is the base? Rate? Percentage?
B. Collect examples of base, rate or percentages from food packages, advertisements, newspapers, bank notices and others. Identify the base, rate or percentage from what you have collected.
Assessment
Directions: Read and understand the given. Choose the letter that corresponds to the correct answer. Write your answers on a separate sheet of paper.
Seven of the 35 boys in the class wear eyeglasses. What percent of the boys wear eyeglasses? Which of the following is asked in the problem?
a. Base
b. Rate
c. Percentage
d. ProportionAling Claring has 100 sacks of rice. She sold 90% of the rice. How many sacks of rice did she sell? Which of the following is asked in the problem?
a. Base
b. Rate
c. Percentage
d. ProportionIf 20 is 20% of a certain number, which of the following is the number?
a. 10
b. 40
c. 80
d. 100What percent of 50 is 10?
a. 1%
b. 20%
c. 40%
d. 60%
You are almost done with this lesson. There is only one activity left. Keep going!
Additional Activities
Directions: Copy the following on your answer sheet. Show your solution. One is done for you.
- What is 40% of 300?
[chart: bar model; 1. What is 40% of 300?] Ten equal boxes labeled 10% each, with the total “= 300”.
Since there are ten _____s, each _____ = 300 ÷ 10 = 30
Thus, 40% of 300 is 4 × 30 = 120. It can also be 40/100 × 300 = 120,
- What 60% of 200?
[chart: bar model; 2. What 60% of 200?] Five equal boxes labeled 20% each, with a bracket labeled 60% over three of them, and the total “= 200”.
- What is 75% of 600?
[chart: bar model; 3. What is 75% of 600?] Four equal boxes labeled 25% each, with a bracket labeled 75% over them, and the total “= 600”.
- What is 20% of P 350?
[chart: bar model; 4. What is 20% of P 350?] Five equal boxes labeled 20% each, with the total “= P 350”.
- What is 80% of P 48?
[chart: bar model; 5. What is 80% of P 48?] Five equal boxes labeled 20% each, with the total “= P48”.
- What is 50% of P 24.50?
[chart: bar model; 6. What is 50% of P 24.50?] Two equal boxes labeled 50% each, with the total “= P 24.50”.
[transcriber’s note: this page is printed rotated 180 degrees; the text is transcribed upright in module order]
Answer Key
What I Know
- A
- C
- B
- B
- A
- C
- B
- C
- D
- C
What’s In
- B. Rate
- Percentage: 6
Base: 30
Rate: 20%
What’s More
Activity 1 Rate me One More Time!
| Given | Base | Rate | Percentage |
|---|---|---|---|
| 1) 75% of 40 is 30. | 40 | 75% | 30 |
| 2) 20% of 80 is 16 | 80 | 20% | 16 |
| 3) 60% of 50 is 30 | 50 | 60% | 30 |
| 4) 27 is 45% of 60 | 60 | 45% | 27 |
| 5)17 is 85% of 20 | 20 | 85% | 17 |
| 6) 13% of 300 is 39 | 300 | 13% | 39 |
Activity 2 Find Me in Words!
| Base | Rate | Percentage |
|---|---|---|
| 200 | 8% | 16 |
| 98 | 150% | 147 |
| 40 | 85% | 34 |
| 25 | 80% | 20 |
| 400 | 20% | 80 |
| 100 | 63%% | 63 |
Activity 3 What are Missing On Me!
| Problem | Base | Rate | Percentage |
|---|---|---|---|
| 1 | 500 | 25% | 125 |
| 2 | P1500 | 5% | P75 |
| 3 | P50 | 10% | P5.00 |
| 4 | P 5 000 | 6% | P300.00 |
| 5 | P4 000 | 25% | P 1 000 |
| 6 | P 100 | 5% | P5.00 |
[transcriber’s note: this page is printed rotated 180 degrees; the text is transcribed upright in module order]
Assessment
- B
- C
- A
- B
- A
- D
- B
- C
- C
- D
Additional Activities
- This is already answered.
- 120
- 450
- P70
- P 38.40
- P 12.25
What I Have Learned
a. The base is the whole (300). The rate is with the percent symbol (50%). The percentage is the part of the whole (150). b. P = B x R B = P/R R =P/B
- 200 2. 20% 3. 40
What I Can Do
a. Given data: Principal amount of P15,000.00 Interest of P150 a month Rate of 1% monthly b. Base = P15 000 Rate = 1% Percentage = P150
References
Mathematics 5 Teacher’s Guide
Ursua, Alvin C. and Angeline P. Lumbre. 2016. 21st Century MATHletes Textbook, Quezon City: Vibal Group Inc.
Villamayor, Adela C., Amelia D. Celeridad-Wright and Eden C. de Joya. 2017. Math for Life Worktext in Mathematics, Quezon City: Rex Book Store Inc.
n.d. [online] Available at: <https://khanacademy.org> [Accessed 11 August 2020].
www.onlinemathlearning.com. n.d. Finding The Base Number In A Percent Problem Worksheet (Solutions). [online] Available at: <https://www.onlinemathlearning.com/percentage-base.html> [Accessed 11 August 2020].
n.d. [online] Available at: <https://education.seattlepi.com/math-games-teach-percentages-fractions-6712.html> [Accessed 11 August 2020].
Camarillo, n.d. Rate Base Percentage. [online] Slideshare.net. Available at: <https://www.slideshare.net/JunindMaeCamarillo/rate-base-percentage-80134206> [Accessed 11 August 2020].
For inquiries or feedback, please write or call:
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Telefax: (632) 8634-1072; 8634-1054; 8631-4985
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