Multiplying Multiple Digits with Zeros

300 x 20

• 6,000

• 5,000

• 60,000

• 600

40 x 40

• 1,600

• 160

• 800

• 16,000

4 x 2,000

• 8,000

• 800

• 6,000

• 80,000

When multiplying a whole number times a power of 10, how do I know how many zeros to annex?

• The whole number tells us how many zeros to annex

• Ten zeros, because it's times a power of 10

• The exponent

• The number of digits behind the decimal

When multiplying a whole number times a multiple of 10, how do I know how many zeros to annex?

• The whole number tells us how many zeros to annex

• Ten zeros, because it's times a power of 10

• The exponent

• The number of zeros on the multiple of 10, tell us how many zeros to annex

8 x 10⁴

• 8,0000

• 80,000

• 8,000

• 800

CHOOSE ALL THAT ARE TRUE :

• 10 x 10 x 10 x 10 = 40

• 10 x 10 x 10 x 10 = 10⁴

• 10 x 10 x 10 x 10 = 1,000

• 10 x 10 x 10 x 10 = 10,000

When multiplying a WHOLE NUMBER times a POWER OF 10, what do you do?

• Keep the whole number, and annex one zero

• Multiply the whole number times 10

• Keep the whole number, and annex the same number of zeros as the exponent

• Keep the 10 and annex the number of zeros in the exponent

MULTIPLY 45 x 10³

• 4.5

• 45

• 4,500

• 45,000

MULTIPLY

19 x 10,000

• 1,900

• 190,000

• 190

• 19