1. Number and place value

Lesson

Can you round 3 or 4 digit numbers ?

Round 7521 to the nearest thousand.

Worked Solution

Idea summary

When rounding a number to the nearest thousands:

Use a number line to check if it is closer to the thousands above, or the thousands below the number.

If a number is exactly in the middle, round to the higher number.

Sometimes we only need an approximation of our number, rather than the exact value. We work out which number it is closest to, and we can do this on a number line, or using the rule for rounding. Let's see how to do both of these things in this video.

Round 96\,501 to the nearest thousand.

Worked Solution

Idea summary

It doesn't matter how many places our numbers have, when we round the number, we need to know what we are rounding it to. If we round 130 to the nearest hundred, we will get a different answer than if we round it to the nearest ten.

uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers