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## Scientific Notation

1.
Which expression below is the number 3,000,000 (3 million) in scientific notation?
1. $1.0 xx 10^6$
2. $3.0xx 6^10$
3. $3.0 xx 10^6$
4. $3,000,000xx10^6$
2.
Write .0083 in scientific notation.
1. $8.3 xx 10^3$
2. $8.3 xx 10^4$
3. $8.3 xx 10 ^-3$
4. $8.3$
3.
Write the number 64,000 in scientific notation.
1. $6.4 xx 10^4$
2. $6.4 xx 10 ^ -4$
3. $6.4 xx 10 ^5$
4. $6.4 xx 10^-5$
4.
The number 0.00003007 expressed in scientific notation is
1. $3.007 xx 10^5$
2. $3.7 xx 10^-5$
3. $3.007 xx 10^-5$
4. $3.007 xx 10^-4$
5.
How do you express 1,870,000 in scientific notation?
1. $5.49 x 10^-8$
2. $1.87 x 10^-6$
3. $1.87 x 10^6$
4. $187 x 10^6$
6.
$(6.9 xx 10^8)/(3 xx 10^5)$

Perform the indicated computations. Write the answers in scientific notation.
1. $2.3 xx 10 ^3$
2. $2.3 xx 10^13$
3. $2.3 xx 10^-3$
4. $2.3 xx 10^4$
7.
$(6.1 xx 10 ^5) (4 xx 10 ^-9)$ Perform the indicated computation, write your answer in scientific notation.
1. $2.44$
2. $2.44 xx 10 ^ 3$
3. $2.44 xx 10 ^ -3$
4. $2.44 xx 10 ^14$
8.
I.For each of the following numbers, by how many places must the decimal point be moved to express the number in standard scientific notation?

II.In each case will the exponent be positive, negative, or zero?

a. 55,651

b. 0.000008991

c. 2.04

d. 883,541

e. 0.09814

9.
Write the following in scientific notation:

8,345,000

0.0000124

8,670,000,000

10.
Write the following in standard notation:

$8.2 xx 10^8$

$5.68 xx 10^-3$

$4.839 xx 10^7$

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