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

Topics: Harshad number, Elementary arithmetic, Greatest common divisor Pages: 7 (616 words) Published: December 4, 2010
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

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

23 + 38 = 61 = 9 5
7 7 7 7

7

3 + 2 = 8 = 1
8 7 8

2 1 + 4 1 = 2 4 + 4 7 = 6 11
4 7 28 28 28

28

1 =15
4 60

3 =18
10 60

14 = 56
15 60

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

60

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

24

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

3

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

4-1 = 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

30

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

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

15 3

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

11 = 22
15 30

7 = 21
10 30

2 = 12
5 30

22 + 21 = 43 – 12 = 31 = 1 1
30 30 30 30 30 30

30

14) Evaluate. Write the answer in lowest terms. [pic]
2 = 8
9 36

3 = 27
4 36

5 = 30
6 36

6 8 = 278
36 36

1 27 = 63
36 36

3 30 = 138
36 36

278 + 63 = 341- 138 = 203 = 5 23
36 36 36 36 36 36

36

15) What is the place value of the 8 in the decimal 7.58021 ?

51.1
5.33
4.8
+6 .
67.23

17) Subtract. [pic]

24.70
- 8.54
16 .16

18) Multiply. [pic]

Answer: 0.8175 x 1,000 = 817.5 all I did was move the decimal point 3 times to the right, so that is was to the 1,000’s place

19) Divide by moving the decimal point. [pic]

3.25
20) Divide. [pic]
3
144
96
240
240
0

21) Divide. [pic]

22) Write in decimal form. [pic]

23) Write the following as a common fraction. Write your answer in lowest terms. [pic]

0.76 = 76 = 19
1 100 25

25

24) Find the decimal equivalent of the mixed number. [pic]
8 + 7 ÷ 8 = 1.875

25) Write the decimal equivalent using the bar notation. [pic]

2÷9 = 0.2222222