In worksheet, children practise rounding in order to estimate
the answers to both additions and subtractions. They also review
mental strategies for estimating answers.
Children should be familiar with the word “approximate”, and “estimate” and
the degree of accuracy to which to round is a useful point for discussion. Generally, rounding to the nearest 100 for 3-digit numbers,
the nearest 1,000 for 4-digit numbers and so on is appropriate.
Extra reasoning sheet attached.
Answer sheet attached.
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