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Math 6 Answer Key Practice Test Unit 2

1. Write each number in standard form.

a) 2 million 186 thousand 23 __________2 186 023_________________

b) 50 000 000 + 5 000 000 + 70 000 + 2000 + 9 ________55 072 009

2. Write each number in expanded form.

a) 184 267 317

100 000 000 + 80 000 000 + 4 000 000

+ 200 000 + 60 000 + 7000 + 300 + 10 + 7

b) 4 300 627 803

4 000 000 000 + 300 000 000 + 600 000

+ 20 000 + 7000 + 800 + 3

3. Find the first 2 common multiples of each set of numbers.

a) 3, 4, and 6

12 and 24

c) 4, 6, and 8

24 and 48

4. Draw a large Venn diagram with 2 overlapping loops.

Label the loops Multiples of 3 and Multiples of 4.

Sort these numbers in the Venn diagram:

48, 15, 24, 33, 60, 73, 56, 40, 42, 21, 16, 28

[pic]

5. List all the factors of each number. Circle the factors that are prime numbers.

a) 24 1, 2, 3, 4, 6, 8, 12, 24

b) 36 1, 2, 3, 4, 6, 9, 12, 18, 36

c) 50 1, 2, 5, 10, 25, 50

d) 19 1, 19

6. Draw factor trees for each number. (multiple answers possible)

a) 66 b) 90

[pic] [pic]

c) 48 d) 24

[pic]

7. Evaluate each expression. Use the order of operations.

a) 5 + 6 ( 7 b) 7 ( (20( 2) c) 28 ( (16 – 9)

47 70 4

8. Use a calculator to evaluate. Use order of operations

a) 1256 – 57 ( 8 = 800

b) 684 ( 23 ( 4 = 3933

c) 96 342 – (573 ( 29) = 79 725

d) 4094 ( 89 + 318 = 364

9. Twenty-seven nuts and bolts are needed to assemble a picnic table.

How many nuts and bolts are needed for 256 picnic tables?

27 x 256 = 6912 nuts and bolts

10. Cecil planted 744 maple trees in 24 equal rows.

How many trees were planted in each row?

744 ÷ 24 = 31 trees

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