Free Printable Scientific Notation

1.

The approximate mass of Mars is 6.42 x 10²³kilograms. Write this mass in standard notation

a)

0.00000000000000000000000642

b)

642,000,000,000,000,000,000,000

c)

64,200,000,000,000,000,000,000,000

d)

642,000,000,000,000,000

2.

The weight of an ant is about 1.7 x 10⁻⁵pound. Write 1.7 x 10⁻⁵in standard notation.

a)

170,000

b)

1,700,000

c)

0.0000017

d)

0.000017

3.

An adult blue whale can eat about 40,000,000 krill a day. Write this number in scientific notation.

a)

4 x 10⁷

b)

4 x 10 ^-7

c)

4 x 10⁸

d)

4 x 10⁶

4.

A bee sting delivers about 0.00005 gram of venom. Write this number in scientific notation

a)

5 x 10⁵

b)

5 x 10^-6

c)

6 x 10^-7

d)

5 x 10^-5

5.

Write 9 in scientific notation.

a)

It cannot be done.

b)

9 x 10¹

c)

9 x 10 ^-1

d)

9 x 10⁰

6.

Write 0.77 in scientific notation.

a)

7 x 10^-1

b)

7 x 10¹

c)

7 x 10²

d)

7 x 10^-2

7.

Write (1 x 10⁵) in standard notation and in words.

a)

1,000,000, one million

b)

10,000,000, ten million

c)

0.00001, one hundred thousandths

d)

100,000, one hundred thousand

8.

Write 1.0 x 10^-3 in standard notation and in words.

a)

0.001, one thousandth

b)

0.0001. one ten-thousandth

c)

0.00001, one hundred thousandth

d)

1,000, one thousand

9.

How many times greater is Brazil $about\ \left(2\times10^8\right)$ ) than Paraguay $about\ \left(7\times10^6\right)$ ?

a)

$\frac{10^6}{10^8}=10^{-2}=0.01;\ \frac{2}{7}\cong0.29;\ 0.29\times0.01=0.029$
Brazil is 0.29 times greater

b)

$\frac{10^8}{10^6}=10^2=100;\ \frac{2}{7}\cong0.29\cong;\ 0.29\ \times100\ =29;\$
Brazil is 29 times greater

c)

$\frac{10^8}{10^6}=10^2=100;\ \frac{2}{7}\cong0.29;\ 0.29\times100=29$

Paraguay is 29 times greater

10.

How many times greater is 0.0000009 than 0.0000004?

a)

22.5 times greater

b)

2.25 times greater

c)

222.5 times greater

Scientific Notation

Total questions: 10

Worksheet time: 5mins

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