How to round a number to the nearest 10

Rounding numbers to the nearest 10 means finding which 10 the number is closest to.

Counting in 10s looks like this:

10, 20, 30, 40, 50, 60, 70, 80, 90, 100

If we have the number 73, we know it’s in between 70 and 80. 73 is closer to 70 than 80. So if we round 73 to the closest 10 it would be 70.

70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80

If we have the number 77 we know it is closer to 80 than 70.

It is important to remember the golden rule! If a number is exactly halfway between two multiples of 10, you always round up.

75 would be rounded up to 80.

 

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