91�ȱ�

To round a number to the nearest 10, look at the units digit.

If the units digit is 5 or more, round up. If the units digit is 4 or less, round down.

The last digit in 356 is 6. So we round it up to 360.

356 → 360

The last digit of 352 is 2. So we round it down to 350.

352 → 350

475 ends in a 5. We always round a 5 up. So 475 rounds up to 480.

475 → 480

To round a number to the nearest 100, look at the tens digit. If the tens digit is 5 or more, round up. If the tens digit is 4 or less, round down.

The tens digit in 3281 is 8. So we round it up to 3300.

3281 → 3300

The tens digit of 3216 is 1. So we round it down to 3200.

3216 → 3200

To round a number to the nearest 1000, look at the hundreds digit. If the hundreds digit is 5 or more, round up. If the hundreds digit is 4 or less, round down.

The hundreds digit in 4559 is 5. So we round it up to 5000.

4559 → 5000

The hundreds digit of 4295 is 2. So we round it down to 4000.

4295 → 4000

Looking for other ways to bring the magic of maths to your classroom? This short animated film is from the 91�ȱ� Teach Series, Hypatia's Mathematical Maze, and dives into how and why we round numbers.

91�ȱ� Teach has thousands of free, curriculum-linked resources to help deliver lessons - all arranged by subject and age group.