Math Review

Omar has 4 packs of marbles.

Each pack has 7 marbles. How many marbles does Omar have?

• 11

• 28

• 24

• 17

Answer explanation

7 X 4 = 28

Which of these has the same answer as 14 x 1?

• 12 x 1

• 7 x 7

• 7 x 2

• 14 x 0

Answer explanation

Identity property of multiplication:

14 x 1 = 14

7 x 6 = _____ x 7

Answer explanation

The commutative property of multiplication.

5 x ___ = 0

Answer explanation

Zero property of multiplication

5 x 0 = 0

( 3 x 8 ) + ( 4 x 8 ) = 8 x ___

Answer explanation

The distributive property of multiplication.

Ahmed and 3 of his friends went to the park. They saw the posted sign. Which equation shows how many tickets the friends used to ride the Pharaoh's boat?

• 5 x 4 = 20

• 7 x 4 = 28

• 3 x 4 = 12

• 4 x 4 = 16

6 x 10

• 30 + 30

• 23 + 10

• 50 + 5

4 x 8

• 20 + 3

• 30 + 30

• 30 + 2

• 30 + 20

9 x 5

• 30 + 15

• 15 + 15

• 30 + 30

• 20 + 15

Which of these can be used to model how many fish Judy has?

• 9 - 6

• 9 x 6

• 9 + 9

• 9 + 6