1)

Astronomers measure distances in the solar system in astronomical units. (AU)

One AU is 150,000,000km.

The distance from the Sun to Pluto is 395 AU.

How many kilometres is the Sun from Pluto?

Give your answer in standard form to a sensible degree of accuracy.

2)

Write the number 4.5 x 10^-3 as an ordinary number.

3)

Find the value of (2.7 x 10^3) divided by (3.375 x 10^5)

Give answer in standard form.