Understanding Multiplying by 10s and 100s

​Multiply by 10s and 100s

By Amy Melany

Fill in the Blanks

If 3 x 8 = 24, then 3 x 80 = _

Fill in the Blanks

If 7 x 1 = 7, then 7 x 100 = _

Multiple Choice

If 4 x 2 = 8, then 4 x 20 =

• 800

• 42

• 420

• 80

Fill in the Blanks

If 9 x 9 = 81, then 9 x 90 = _

Fill in the Blanks

If 6 x 2 = 12, then 6 x 200 = _

Multiple Choice

If 1 x 7 = 7, then 1 x 700 = _

• 70

• 700

• 7,000

• 170

Fill in the Blanks

If 9 x 6 = 54, then 9 x 60 = _

Multiple Choice

If 4 x 4 = 16, then 4 x 400 = _

• 16

• 160

• 1,600

• 16,000

Fill in the Blanks

If 9 x 2 = 18, then 9 x 200 = _

Multiple Choice

If 5 x 5 = 25, then 5 x 50 = _

• 250

• 1,250

• 2,500

• 225

Fill in the Blanks

If 9 x 8 = 72, then 9 x 80 = _

Multiple Choice

If 8 x 2 = 16, then 800 x 2 = ____

• 16

• 160

• 1,600

• 16,000

Fill in the Blanks

If 5 x 1 = 5, then 500 x 1 = _

Multiple Choice

If 8 x 3 = 24, then 80 x 3 = _

• 803

• 240

• 24

• 83

Fill in the Blanks

If 5 x 4 = 20, then 500 x 4 = _

Multiple Choice

If 8 x 6 = 48, then 800 x 6 = _

• 48

• 480

• 4,800

• 48,000

Fill in the Blanks

If 5 x 9 = 45, then 50 x 9 = _

Fill in the Blanks

If 6 x 5 = 30, then 600 x 5 = _

Multiple Choice

If 3 x 9 = 27, then 300 x 9 = _

• 27,000

• 2,700

• 270

• 27

Multiple Choice

If 4 x 5 = 20, then 40 x 5 = _

• 20

• 200

• 2,000

• 20,000