Rounding and estimating

1

What is {1,356} to the nearest hundred?

2

What is {213.8} to the nearest whole number?

3

Estimate the total cost of five packets of sweets that cost \pounds{2.95} each, and two drinks costing \pounds{1.45} each.

4

Estimate what \pounds{208} is divided between three people.

5

Round {23.517} to one decimal place.

6

Round {476.357} to two decimal places.

7

Which number has three significant figures?

8

Round {46.673} to two significant figures.

9

Round {0.04518} to three significant figures.

10

A number squared makes {30}. What is this number correct to one decimal place?