Grade 5 PPT_Math_Q3_W3_Lesson 59_Finding the Percentage in a Given Problem.pptx

Finding the Percentage in a Given Problem

1. Lesson 59: Finding the Percentage in a Given Problem  

2. Mental Computation on Changing percent to ratio, decimal to percent, fraction to percent and vice versa 70 % 20%

3. Review (Identifying the base, percentage and rate in a problem)   6 is 25% of 24 20% of 15 is 3 30 is 50% of 60

4. What’s your target score in a 20-item test? What passing grade is it? (75%, 80%, 90 % or 100%? The pupils have the freedom to choose.   Do you study your lesson every day? Do you listen well and participate in class discussion? Why do you need to study? Will it help you prepare for your future? E mphasize the value of being studious and participative

5. Vincent, a boy from a fishing village is a diligent and studious pupil. He goes to school and every day and does his work well. He never skips studying his lesson every night. When he took their 50-item quarter examination he got 96% of it correctly? What is his score?

6. Who is the boy from the fishing village? How is he as a pupil? Did he do well in school? How do you know? How many items is their test ? What rating does Vincent get in the test? Is this a high rating? How do you know? Will you do the same? Why?  

7. GROUP ACTIVITY

8. 50 Step 1: x 96 Arranged the numbers vertically.    

9. 50 Step 2: x 0.96 Move the decimal point of 96% twice from right to left.    

10. 50 Step 3: x 0.96 300 450 Multiply the numbers following the steps in multiplication. 48 – number of correct items Vincent got out of 50-item test . + 000 __ 048.00

11. After the group presented and checked their work, call on the leader to relate what they have done to solve the problem.   How do we solve for the percentage? Did you move the decimal point of the rate from right to left? How many move of decimal point do we move?  

12. Summarizing the Lesson In finding the percentage of a given number follow these steps: Find the rate in the given problem . Arrange the numbers in vertically. Move the decimal point of the given rate twice from right to left. Multiply the numbers following the steps in multiplication. Count the number at the right of the decimal point which will decide where to put the corresponding decimal point.

13. Another way of solving percentage is by changing percent to fraction. You will be guided by following these steps: 1. Convert percent to fraction. You can use the lowest term of the fraction if you want. 2. Multiply the given number to the numerator. If possible use cancellation . 3. Divide the product of the given number and the numerator by the denominator .

14. Directions: Complete the table by identifying the percentage of the following items.   Assessment RATE BASE PERCENTAGE 1. 25% 40 2. 10% 120 3. 15% 125 4. 20% 300 5. 50% 780

15. Home Activity Answer the following.   1. What is 25% of 4? 2. N is 50% of 2. 3. 200 % of 3 is what number? 4. 75% of 12 is ____? 5. 60% of 30 is N.