Math Unit 15

Select the expression that can be used to solve 48 x 7.

• ( 40 x 7 ) + ( 80 x 7 )

• ( 40 x 7 ) + ( 8 x 7 )

• ( 7 x 80 ) + ( 7 x 8 )

• ( 4 x 8 ) x 7

Which expressions equal 150? ( Hint: All 3 expressions must work.)

• 10 x 5

  15 + 10

  100 + 5

• 100 x 50

  5 x 10

  3 x 5

• 15 x 10

  5 x 30

  50 x 3

Which expressions equal 200 ?

( Hint: all 3 expressions must equal 200 .)

• 20 x 10

  40 x 5

  2 x 100

• 100 + 20

  200 x 0

  120 x 10

• 100 x 100

  20 x 100

  2 x 10

Select the expressions with a product of 1,200 .

Hint: All 4 expressions must work!

• 1,200 x 10

  200 x 600

  1 x 12, 000

  120 x 40

• 700 x 500

  70 x 50

  120 x 4

  80 x 40

• 12 x 10

  120 x 5

  60 x 50

  300 x 400

• 120 x 10

  30 x 40

  400 x 3

  60 x 20

Select the factor to make this true:

5 x ___ = 400

• 8

• 80

• 800

Select the factor to make this true:

7 x _____ = 4,900

• 700

• 70

• 7

• 470

What is the product of 5 x 2 x 7 ?

• 17

• 700

• 14

• 70

What is the product of 600 and 8 ?

• 480

• 4,800

• 608

• 4,200

Which expression could be used to solve 15 x 9 ?

• ( 10 x 5 ) + ( 5 x 4 )

• ( 15 + 9 ) x ( 5 + 9)

• (10 x 9 ) + ( 5 x 9 )

Match the equation with the unknown fact. Solve for " n ".

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

• n = 8

• n = 5

• n = 28