7. Mental Computation Drill on changing percent to ratio,
decimal to percent, fraction to percent, and vice versa.
1.percent to ratio:6% =
2.decimal to percent:1.2 =
3.Fraction to percent:3/4 =
4.Percent to decimal:25% =
5.ratio to percent:1:2 =
10. Pablo listens very well to the teacher
during the discussion of the lesson.
When they were given a 5-item test his
grade was 80%. How many correct
answers did Pablo get?
Activity 1: Use of Compatible Number
through Manipulatives (Counters)
11. a. Who listens very well to the teacher?
b. How many items was their test?
c. What was his grade in the test?
d. If you were Pablo, will you be listening
intently to the teacher? Why?
e. Do you think you can get a higher grade
than Pablo? Why do you think that you can
get a higher grade than Pablo?
Following Questions:
12. Discussion:
1. What are the given data? (write
the given data inside the
Techan's Triangle)
2. What is the equation of the
problem?
80% X 5 = N
0.8 X 5 = N
4 = N
(Techan’s Triangle)
13. The formulated proportion and the solution.
5 = N.
100 80 5:100 = N : 80
100 x N = 5 x 80 100 x N = 5 x 80
100 N = 400 v100 N = 400
N = 400 N = 400
100 100
N = 4 N = 4
14. Angel, a son of an overseas worker,
spends time studying his lessons and
helping his mother do the household
chores. As a result, he gets 98% out of a
50-item test in Math. What is his real
score?
Activity 2: Use of real situation problems as
opener
15. a. Who is the son of an overseas worker?
b. What describes Angel as a pupil?
c. What does Angel do to help his mother?
d. How many items is their test in Math?
e. What rating does Angel get in the test? Is
this a high rating? How do you know?
f. If you were Angel will you be doing the
same? Why?
Following Questions:
16. 1. What does the problem ask for?
2. What facts are given?
3. What are the needed data? (use Techan’s
Triangle)
4. How will you find the answer to the
question?
Solve the problem by answering the
following questions:
17. 5. What equation best suits the problem?
98% x 50 = N
0.98 x 50 = N
49 = N
6. What proportion represents the problem?
98 = N.
100 50 98:100 = N : 50
100 x N = 98 x 50 100 x N = 98 x 50
100 N = 4 900 100 N = 4 900
N = 4 900 N = 4 900
100 100
N = 49 N = 49
18. What is 90% of a 50-item test?
90% of a 50-item test is what?
N is 90% of a 50-item test.
____ is 90% of a 50-item test.
Activity 3: Use of word Problems
19. 1. What facts are given?
2. What will you do to find the answer to the
problem?
3. What equation best transforms the problem?
4. Write the equation to compute for the answer.
0.90 x 50 = N 0.90 x 50 = 45
5. What proportion translates the problem?
Solve the problem by answering the
following questions:
20. 90 = N.
100 50 90:100 = N : 50
100 x N = 90 x 50 100 x N = 90 x 50
100 N = 4 500 100 N = 4 500
N = 4 500 N = 4 500
100 100
N = 45 N = 45
Solution.
26. Application
A. There are 40 pupils in a class. Seventy-five
percent of them are present. How many are
present? How many are absent?
B. Rhoda’s allowance for the day is ₱250. She
spends 80% of it and saves the rest. How
much does she spend? How much does she
save?
28. A. Answer the following.
1. What is 25% of 4?
2. N is 50% of2?
3. 200% of 3 is what number?
4. 75% of 12 is _____.
5. 60% of 30 is N.
29. A. Answer the following.
6. 30% of 600 is what number?
7. 230% of 90 is N.
8. 150% of ₱400 is _____.
9. _______ is 10% of ₱1,000,000.
10. What number is 1% of ₱1,000.
30. B. Read, Analyze, and Solve.
1.Cesar invited 300 kids to his birthday party.
Only 15% of the kids did not showed up. How
many kids came to the party?
2.There were 50 pupils in Grade III. If 28% of
the pupils were absent, how many pupils were
present
