In this worksheet, we will practice expressing numbers in scientific notation and converting numbers between their standard and scientific forms.

**Q4: **

There are approximately 200 million cows in India. Express this number in standard form.

- A
- B
- C
- D
- E

**Q5: **

What is 0.00007 written in standard form?

- A
- B
- C
- D
- E

**Q6: **

The ship Titanic that sank in the Atlantic had a mass of about kg. Which of the following could be used as an estimate for this value?

- A
- B
- C
- D
- E

**Q7: **

An estimate for the number of eggs a queen termite can produce in a lifetime is . Write this number in standard form.

- A
- B
- C
- D
- E

**Q10: **

Express in standard form.

- A
- B
- C
- D

**Q11: **

Express in standard form.

- A
- B
- C
- D
- E

**Q12: **

Express 0.00447 in scientific notation.

- A
- B
- C
- D
- E

**Q13: **

In America, about 10 million dollars is spent every day on potato chips. Express this amount in scientific notation.

- A dollars
- B dollars
- C dollars
- D dollars
- E dollars

**Q14: **

Approximately tons of pasta are consumed in America every year. Express this number in standard form.

- A
- B
- C
- D
- E

**Q15: **

In the US, around tons of worn out currency are shredded every year. Express this number in scientific notation.

- A
- B
- C
- D
- E

**Q16: **

Express 248 in scientific notation.

- A
- B
- C
- D
- E

**Q17: **

Express in standard form.

- A
- B
- C
- D

**Q18: **

Write 0.000853 in scientific notation.

- A
- B
- C
- D
- E

**Q19: **

Express 0.146 in scientific notation.

- A
- B
- C
- D
- E

**Q20: **

The length of an object is 7 mm. Express this length in metres, giving your answer in scientific form.

- A m
- B m
- C m
- D m

**Q21: **

The speed of light is approximately m/s. Write this speed in scientific notation.

- A
- B
- C
- D
- E

**Q22: **

A terabyte is made of approximately bytes. Rewrite in standard form.

- A bytes
- B bytes
- C bytes
- D bytes
- E bytes

**Q23: **

The average distance between Earth and the sun is 92 960 000 mi. Rewrite this distance using standard form.

- A mi
- B mi
- C mi
- D mi
- E mi

**Q24: **

The population of the world is about . Which of the following could be used as an estimate for this value?

- A
- B
- C
- D
- E

**Q25: **

The value of the services sector of the US economy in the first quarter of 2012 was billion. Rewrite this amount in scientific notation.

- A
- B
- C
- D
- E