Basic Rounding and Estimating

These are quite easy for starters. The problems in this thread shouldn't really be too challenging.

1.  The attendance at a Rugby International was given as 38379. Round off this number to the nearest thousand.
2. Round off 38379 to the nearest hundred.
3. Round off 38379 to the nearest ten.

Use a calculator to work these out, then give your answers correct to the accuracy in brackets.

4. Work out 412 ÷ 19 and give your answer to the nearest whole number.
5. Calculate 25 ÷ 4.7 to 1 decimal place
6. Calculate 4.77 x 2.4 to 2 d.p
7. What is 4.866 squared to 3 d.p. 
8. Calculate 1399 ÷ 199.99 to 2 d.p.