GoMath Ch. 1 (L1-7) Review pt. 1

Identifying Properties

100

Identify the property being used:

10 x 4 x 2 = 10 x 2 x 4

Commutative Property of Multiplication

200

Identify the property being used:

7 + (3 + 8) = (7 + 3) + 8

Associative Property of Addition

300

Identify the property being used:

5 x 1 = 5

Identity Property of Multiplication

400

Which property would you use to easily solve the following equation?

5 x 28 = (5 x 20) + (5 x 8)

Distributive Property

500

Identify the properties being used:

(91 x 25) x 4 = (25 x 4) x 91

Associative Property of Multiplication

AND

Commutative Property of Multiplication

Utilizing Properties

100

Use the Associative Property to quickly solve the following problem:

(150 x 4) x 25 =

150 x (4 x 25) =

150 x 100 =

= 15,000

200

Use the Commutative Property to quickly solve the following problem:

182 + 257 + 18 =

182 + 18 + 257 =

200 + 257 =

= 457

300

Use the Distributive Property to quickly solve the following problem:

5 x 44 =

(5 x 40) + (5 x 4) =

200 + 20 =

= 220

400

Use the Commutative Property and the Associative Property to quickly solve the following problem:

(16 + 42) + (34 + 8) =

(16 + 34) + (42 + 8) =

50 + 50 =

= 100

500

Use the Distributive Property to quickly solve the following problem:

90 x 12

(90 x 10) + (90 x 2) =

900 + 180 = 

= 1,080

Recognizing Patterns

100

If 10 times a 90 is 900, 

then 100 times 90 is ______.

9,000

200

If 1/10 of 300 is 30,

then 1/100 of 300 is _____.

3

300

400 is 10 times as much as ______.

40

400

1,000 is 1/10 of _____.

10,000

500

If 34 x 10⁴ = 340,000,

then 34 x 10^{2 = ______.}

3,400

Multiplying

100

Solve:

5 x 93 =

450 + 15 =

= 465

200

Solve:

8 x 24 =

160 + 32 =

= 192

300

Solve:

49 x 17

(40 x 10) + (40 x 7) + (9 x 10) + (9 x 7) =

400 + 280 + 90 + 63 =

680 + 153 =

= 833

400

Solve:

7 x 563 =

(7 x 500) + (7 x 60) + (7 x 3) =

3,500 + 420 + 21 =

= 3,941

500

Solve:

123 x 45 =

(100 x 40) + (100 x 5) + (20 x 40) + (20 x 5) + (3 x 40) + (3 x 5) =

4,000 + 500 + 800 + 100 + 120 + 15 =

= 5,535

Mixed Bag

100

Find the value:

10^{5 =}

100,000

200

Find the value:

5 x 10^2 =

500

300

Find the value:

500 x 800 = 

(5 x 10²) x (8 x 10²) =

(5 x 8) x (10² x 10²) =

40 x 10⁴ =

= 400,000

400

Adam went bought 29 packs of cards.

Each pack contains 12 cards.

How many cards did Adam buy in all?

29 x 12 =

(20 x 10) + (20 x 2) + (9 x 10) + (9 x 2) =

200 + 40 + 90 + 18 =

= 348 cards

500

Angel played 9 games of Hooper-Shooter-Bloopers.

In each game, she maxed out her score and got 6,000 points each time.

What was Angel's total score?

9 x (6 x 10³) =

(9 x 6) x 10³ =

54 x 1,000 =

= 54,000 points