Multiplying by Powers of 10
True or False?
When multiplying by a power of 10 you always add as many zeros as the exponent says.
False
What is 10 x 10 x 10 x 10
104
When you multiply a number by a power of 10, you move the decimal to the ________
right
When you divide a number by a power of 10, you move the decimal to the ________.
Left
Is this a power of 10?
410
No
(Powers of 10 must have BASES of 10)
Rewrite using powers of 10
40 x 10,000
40 x 104
Where is the decimal in any whole number?
at the end
5.2 ÷ 10
0.52
0.002 x 102 = ____
0.2
100,000
105
____ x 0.006 = 0.06
101
520 ÷ 102
5.2
0.03 x 103 = ____
30
What is the answer to:
50 x 103
50,000
0.007 x ___ = 7
103
52 ÷ 103
0.052
0.18 x 104 =
1,800
What is the answer to:
6.7 x 104
67,000
8 x 100 = 8 x 102 = ____
800
5200 ÷ 101
520