2 9 Using Scientific Notation 59

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29
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Using Scientific Notation
Write each number in standard notation.
7
4
-3
1.
1.24 ∗ 10 =
2.
3.5 ∗ 10
3.
8 ∗ 10- 6 =
4.
7.061 ∗ 108 =
8
=
Change the numbers given in standard notation to scientific notation. Change the
numbers given in scientific notation to standard notation.
5.
Light travels about 11,802,000,000, or
per second.
, inches
6.
A bacterium can travel across a table at a speed of 1.6 ∗ 10 - 4 ,
, km per hour.
or
7.
One dollar bill has a thickness of 0.0043, or
8.
The mass of 1 million pennies is approximately 2.835 ∗ 106,
or
, inches.
, grams.
Use <, >, or = to compare each pair of numbers.
10- 2
Copyright © Wright Group/McGraw-Hill
9.
10- 3
1.2 ∗ 106
10.
1.23 ∗ 10- 3
12.
5.4 ∗ 10- 1
1.23
_
1,000
9.6 ∗ 10- 4
11.
9.87 ∗ 105
13.
Explain how you can tell whether a number written in scientific notation is
less than 1.
Practice
Solve mentally.
14.
3,625 + 3,999 =
15.
8.7 - 4.99 =
16.
4 ∗ 225 =
17.
100,000 / 500 =
18.
683 - 298 =
19.
387 + 499 =
59
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