Mat/115 – Basic Mathematics Cumulative Test: Chapters 3 and 4

MAT/115 – Basic Mathematics
Cumulative Test: Chapters 3 and 4

01) Find the least common multiple of 12 and 18.

Multiples for 12 are 24, 36, 48, 60,

Multiples for 18 are 36, 54, 72, 90

Answer: 36

02) Find the least common multiple of 3, 6 and 9.

Multiples for 3 are 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36

Multiples for 6 are 12, 24, 30, 36, 42, 48, 54, 60, 66, 72

Multiples for 9 are 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108

Answer: 36

03) Add. Write the answer in lowest terms. [pic]
23 + 38 = 61 = 9 5 7 7 7 7

Answer: 9 5 7

04) Add. Write the answer in lowest terms. [pic]
3 + 2 = 8 = 1
8 7 8

Answer: 1

05) Add. Write the answer in lowest terms. [pic]
2 1 + 4 1 = 2 4 + 4 7 = 6 11 4 7 28 28 28

Answer: 6 11 28

06) Add. Write the answer in lowest terms. [pic]
1 =15
4 60

3 =18
10 60

14 = 56
15 60

15 + 18 + 56 = 89 = 1 29
60 60 60 60 60

Answer: 1 29 60

07) Add. Write the answer in lowest terms. [pic]

3 = 9
8 24

3 = 18
4 24

1 = 4
6 24

1 9 = 33 24 24

4 18 = 114 24 24

2 4 = 52 24 24

33 + 114 + 52 = 199 = 8 7
24 24 24 24 24

Answer: 8 7 24

08) Subtract. Write the answer in lowest terms. [pic]
17 – 1 = 16 = 4 = 2
24 24 24 6 3

Answer: 2 3

09) Subtract. Write the answer in lowest terms. [pic]
6 – 2 = 4

4-1 = 3

Answer: 4 3 5

10) Subtract. Write the answer in lowest terms. [pic]

6 3 = 63 = 189 10 30 30

4 11 = 71 = 142 15 30 30

189 – 142 = 47 30 30 30

Answer: 47 30

11) Subtract. Write the answer in lowest terms. [pic]
Answer: 7 7 9

12) Evaluate. Write the answer in lowest terms. [pic]

Answer: 5 = 1 15 3

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