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For Maths today, I would like us to revisit rounding to the nearest 10, 100 and 1000.

 

When rounding 2 digit numbers to the nearest ten, look at the ones column.

 

For example, 16.  6 is in the ones column. If this number is more than 5, you round the number up.

 

So 16 rounded to the nearest 10 would be 20 because 6 is bigger than 5.

 

If our number was 14, 4 is in the ones column, this is less than 5 so we round down.

 

14 rounded to the nearest 10 would be 10 because 4 is less than 5.

 

Similar rules apply for rounding to the nearest 100 and 1000.

 

For rounding to the nearest 100, look at the tens column.

 

For example, 520 - 20 is in the tens column, as this number is less than 5, we round down.

 

520 rounded to the nearest 100 is 500. 

 

If it was 560, we would round up to 600.

 

For rounding to the nearest 1000, look at the hundreds column and use the more than or less than 5 round up and down rule.

 

If you find rounding difficult, choose rounding to 10.

 

If you find only some rounding difficult, choose rounding to 100.

 

If you would like a challenge, choose rounding to 1000.

 

Watch the video if you need support to show you the rules! 

 

Rounding to 10, 100 and 1000

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