**Q5: **

Evaluate , expressing it in scientific notation.

- A
- B
- C
- D
- E

**Q6: **

Evaluate , expressing it in scientific notation.

- A
- B
- C
- D

**Q7: **

Evaluate , expressing it in scientific notation.

- A
- B
- C
- D
- E

**Q8: **

How many times larger is than ?

- A3 times
- B30 times
- C0.3 times
- D300 times
- E0.03 times

**Q9: **

Calculate , giving your answer in scientific notation.

- A
- B
- C
- D
- E

**Q10: **

How many times smaller is than ?

- A times
- B times
- C times
- D times
- E times

**Q11: **

An electron has a mass of approximately kg. The sun has a mass of approximately kg. How many times heavier is the sun than an electron? Give your answer in the form where is a whole number.

- A
- B
- C
- D
- E

**Q12: **

The circumference of Earth is about km and the circumference of Jupiter is about km. How many times larger is the circumference of Jupiter than the circumference of Earth?

- A times
- B100 times
- C0.1 times
- D10 times
- E0.01 times

**Q13: **

How many times larger is than ?

- A times
- B times
- C times
- D times
- E times

**Q14: **

The mass of the sun is about kg and the mass of Earth is about kg. To the nearest whole number, how many times larger is the mass of the sun than the mass of Earth?

- A times
- B times
- C times
- D times
- E333 times

**Q15: **

How many times larger is than ?

- A200 times
- B2 times
- C0.2 times
- D20 times
- E0.02 times

**Q16: **

Light from the sun takes 13 minutes to reach one of the planets. Given that light travels at a speed of m/s, determine the distance between the sun and that planet.

- A meters
- B meters
- C meters
- D meters

**Q17: **

How many times smaller is than ?

- A times
- B times
- C times
- D times
- E300 times

**Q18: **

Given that sunlight travels at a speed of m/s, determine how long it takes for sunlight to reach a planet that is 126 million kilometres away from the sun.

**Q19: **

Find the value of , giving your answer in scientific notation.

- A
- B
- C
- D

**Q20: **

Calculate , giving your answer in scientific notation.

- A
- B
- C
- D
- E

**Q21: **

Calculate the value of , giving your answer in scientific notation.

- A
- B
- C
- D
- E

**Q22: **

How many times larger is than ? Give your answer in scientific notation.

- A
- B
- C
- D
- E

**Q23: **

If the thickness of a sheet of paper is 0.004 cm, what is the height of a stack of 450 sheets of paper?

- A cm
- B cm
- C 18 cm
- D cm

**Q24: **

Find the value of , giving your answer in scientific notation.

- A
- B
- C
- D

**Q25: **

Given that , find the value of , without using a calculator. Give your answer in scientific notation.

- A
- B
- C
- D