Unit Test 1

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5 points

What is 25% of 40?

5 points

What is 5% of 200?

5 points

What is the prime factorization of 137?

137 is a prime number

10,13.7

137 is neither prime nor composite

1,3,7

5 points

What is the least common multiple of 4 and 5?

5 points

What percent of 30 is 6?

15%

20%

180%

5 points

Express the ratio 1/20 as a percent.

20%

12%

5 points

Use the distributive property to simplify the following:

-3(-x+6)

9+x

3x-18

-3x+9

3x-9

5 points

Triangles ABC and DEF are similar. Side AC=3 meters corresponds to side DF=6 meters. Side BC=4 meters corresponds to side EF=X meters.
Set up the equation and solve for X. (hint: draw the triangles and label)

9 m.

8 m.

3 m.

6 m.

5 points

What is the least common multiple of 4 and 5?

10.

5 points

Express the ratio as a fraction in simplest form:

56 pencils to 64 erasers

6/5

7/8

3.5

5664

11.

5 points

Add 1/4 and 3/7.

4/11

19/28

5/10

12/7

12.

5 points

Reduce the following

17/18

6/9

1 1/18

6/7

cannot be reduced

13.

5 points

Reduce 9/12

3/4

cannot be reduced

1.33

3/6

14.

5 points

Simplify the following expression:

3x+3x+7+-2x

4x+7

9x+4x

15x

8x+7

15.

5 points

71 is 10% of what number?

711

710

7.1

16.

5 points

What is the prime factorization of 24?

3,2,2,2

16,8

2,4,0,24

4,6

17.

5 points

64 is what percent of 200?

32%

128%

16%

64%

18.

5 points

16 is 5% of what number?

516

320

200

165

19.

5 points

Use the distributive property to simplify the following:

7(a+4)

a+28

+28

7a+28

a+11

20.

5 points

What is the value of 1 1/2 and 3 3/7

5 1/2

4 13/14

4/9

-3/7

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