Reviewer

1. Prepared by:
Rose R. Andrade

2. Number Series, Analogy,
Ratio and Proportion

3. Question # 1
If 4 miles = 6.44 km., then 14.49 km.
equals how many miles?
D. 10
A. 7 C. 9
B. 8
C. 9
In the proportion, , we call a, b, c
and d as terms.
Use cross products to find the
missing term in a proportion.

4. Question # 2
Which of the following
numbers is prime?
D. 91
A. 57 C. 89
B. 87
C. 89
A prime number is a number
that can only be divided by
itself and 1 without
remainders.

5. Question # 3
What is the average of the first 20
positive integers?
D. 10.5
A. 9 C. 10
B. 9.5
D. 10.5

6. Question # 4
How many times does the digit 7 appear
in the numbers from 1 to 100?
D. 20
A. 9 C. 19
B. 10
C. 19
7, 17, 27, 37, 47, 57, 67, 70,
71, 72, 73, 74, 75, 76, 77, 78,
79, 87, 97

7. Question # 5
What is the average of the first 20
positive integers?
D. 10.5
A. 9 C. 10
B. 9.5
D. 10.5

8. Question # 6
6, 13, 27, 55, 111, _____
D. 223
A. 122 C. 222
B. 123
D. 223
Double the difference then add
to the number
111+112=223

9. Question # 7
1, 5, 10, 16, _____
D. 19
A. 25 C. 21
B. 23
B. 23
Add 4, 5, 6, 7, … to the
succeeding numbers

10. Question # 8
2, 3, 4, 5, 4, 9, 16, _____
D. 32
A. 14 C. 16
B. 25
B. 25
Square the first four
terms

11. Question # 9
½, 2, 7/2, 5, _____
D. 4
A. 13/2 C. 9/2
B. 11/2
A. 13/2
Add 1 ½ to get the next
terms

12. Question # 10
5, 6, 8, 11, 15, 20, _____
D. 21
A. 26 C. 22
B. 24
A. 26
Add 1, 2, 3, 4, 5, … to the
succeeding numbers

13. Question # 11
1, 2, 3, 6, 7, 14, _____
D. 15
A. 30 C. 17
B. 28
D. 15
Multiply the first term by
Multiply the first term by
2 then add 1 to get the
next term, then repeat
the pattern

14. Question # 12
8, 24, 72, 216, _____
D. 432
A. 648 C. 536
B. 710
A. 648

15. Question # 13
1, 1, 2, 3, 5, 8, 13, ____
D. 39
A. 15 C. 26
B. 21
B. 21
Fibonacci sequence
(each number is equal to the
sum of the preceding two
numbers)

16. Question # 14
-1/2, ¼, -1/8, 1/16, _____
D. -1/64
A. -1/32 C. -1/16
B. 1/32
A. -1/32
Multiply the terms by -1/2

17. Question # 15
33.3, 55.5, 77.77, 99.9, _____
D. 101.1
A. 122.1 C. 111.1
B. 121.1
A. 122.1
Add 22.2 to get the
next terms

18. Question # 16
169 is to 13 as 9 is to ____.
D. 27
A. 81 C. 3
B. 36
C. 3

19. Question # 17
5% is to 1/20 as ___ is to 1/8.
D. 8%
A. 18% C. 12.5%
B. 17.6%
C. 12.5%
1/20 = 0.05
0.05 = 5/100
5/100 = 1/20
1/8 = 0.125
Move 2 decimal
places to the right to
make it in
percentage form
0.125
0.125
12.5
12.5

20. Question # 18
5 is to 0.2 as ___ is to 0.25.
D. 5
A. 1 C. 4
B. 2
C. 4
0.2 = 20/100
20/100 = 1/5
0.25 = 25/100
25/100 = 1/4

21. Question # 19
98 is to 490 as 4 is to ___.
D. 20
A. 2 C. 16
B. 8
D. 20
In the proportion, , we call a, b, c
and d as terms.
Use cross products to find the
missing term in a proportion.

22. Question # 20
5 is to 1.25 as 96 is to ___.
D. 46
A. 9.6 C. 36
B. 24
B. 24
In the proportion, , we call a, b, c
and d as terms.
Use cross products to find the
missing term in a proportion.

23. Question # 21
1/5 is to 0.2 as 1/2 is to ___.
D. 0.125
A. 0.1 C. 0.2
B. 0.5
B. 0.5
1 divided
by 5 is 0.20
1 divided
by 2 is 0.50

24. Question # 22
9 is to 81 as to 8 is to ____.
D. 64
A. 16 C. 48
B. 32
D. 64
= =

25. Question # 23
In a class of 62 students, 12 are females.
What is the ratio of males to females?
D. 6:25
A. 31:5 C. 5:31
B. 25:6
B. 25:6
62 – 12 = 50
(50 male)
Male : Female
50 : 12
Lowest term
50 : 12
25 : 6

26. Question # 24
The red bulbs of a Christmas light flash every 8 seconds, the
blue bulbs flash every 10 seconds and the green bulbs flash
every 20 seconds. If they all start flashing together, in every
how many minutes will they flash simultaneously again?
D. 60
seconds
A. 20
seconds
C. 40
seconds
B. 30
seconds
C. 40 seconds
Get the Least Common
Multiple (LCM) of 8, 10, and
20.

27. Question # 25
If a box of medicine is sufficient to support 12
patients in 5 days, how many days will the
medicine last for three patients?
D. 30
A. 5 C. 20
B. 13
C. 20
= 3x = 60
x = 20

28. Question # 26
A recipe calls for 3 eggs for every 8 cups of flour. A
local chef will use 24 cups of flour, how many eggs
must he have?
D.12
A. 8 C. 10
B. 9
B. 9
In the proportion, , we call a, b, c
and d as terms.
Use cross products to find the
missing term in a proportion.

29. Question # 27
A rope 24 meters long is cut into three pieces in
the ratio 3:4:5. How long is the shortest piece of
rope in decimetres?
D. 60 dm
A. 2 dm C. 20 dm
B. 6 dm
D. 60 dm
24 meters = 240 decimeters
3+4+5 = 12
= 20
20 x 3 = 60
20 x 4 = 80
20 x 5 = 100
60 + 80 + 100 = 240
km hm dam m dm cm mm
Kay Hirap Daw Magbake ng Donut, Cake
at Mamon

30. Question # 28
Five out of every seven household have cable TV. If 42,
000 households in a certain city have a TV, how many
do not have cable TV?
D. 32 000
A. 12 000 C. 30 000
B. 20 000
A. 12 000
5:7 = n:42, 000

31. Question # 29
Aira divides her day into leisure, sleep, and work.
In the ratio 2 : 3 : 7. How many hours does Aira
spend working?
D. 21 hrs.
A. 12 hrs. C. 16 hrs.
B. 14 hrs.
B. 14 hours
1 day= 24 hours
2+3+7 = 12
= 2
2 x 2 = 4
2 x 3 = 6
2 x 7 = 14
4 + 6 + 14 = 24

32. Question # 30
When 2,000 pounds of paper are recycled, 18 trees are saved.
How many trees are saved if 5,000 pounds of paper is
recycled?
D. 63
A. 41 C. 45
B. 43
C. 45
In the proportion, , we call a, b, c
and d as terms.
Use cross products to find the
missing term in a proportion.