When rounding to the nearest 10, 100 etc or to a specific number of decimal places/significant figures, if the digit after the cut−off point is 5 or above, round up − if it’s under 5, round down.

1

Round 2.578 to two decimal places.

2

Round 0.005708 to three significant figures.

3

Round 12,563 to two significant figures.

4

Round 6.453 to two decimal places.

5

An classroom seats 32 pupils. On a given day only 13 pupils are present, calculate the part of seats that are filled as a percentage. Give your answer to the nearest whole number.