1.
The rule for multiplying by powers of 10 states that if the exponent of the 10 is positive, then you move the decimal point __________.
A.
to the left by the same number of spaces as the number in the exponent
B.
to the right by the same number of spaces as the number in the exponent
C.
to the right by the number of spaces as the number in the exponent minus 1
D.
to the right by the number of spaces as the number in the exponent plus 1
Hint
2.
Express 0.00000083 in scientific notation.
A.
0.83 × 10
-6
B.
8.3 × 10
-7
C.
83 × 10
-8
D.
-8.3 × 10
-7
Hint
3.
The speed of light is about 3 × 10
8
meters per second. How far would a beam of light travel in 5 seconds? Express the answer in scientific notation.
A.
1.5 × 10
6
m
B.
1.5 × 10
9
m
C.
1.5 × 10
10
m
D.
1.5 × 10
5
m
Hint
4.
Express 8 micrograms in scientific notation.
A.
8 × 10
9
grams
B.
8 × 10
6
grams
C.
8 × 10
-6
grams
D.
8 × 10
-9
grams
Hint
5.
Evaluate the expression
.
A.
0.004
B.
40,000
C.
0.0004
D.
4,000
Hint