Decimals: Rounding and estimating answers

Reason For Learning

Often answers are not a neat number and may be a very long decimal, rounding is the idea of trimming the decimal to a number that is close but not exact to simplify further operations or minimise writing.

Learning Intention

Rounding to 2, 3, 4 decimal places, rounding where the rounded digit is zero Rounding to a single figure Using rounded values to estimate answers to decimal addition, subtraction, multiplication and division problems.

Key Vocabulary Terms

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    ACMNA156 Level 7

    Round decimals to a specified number of decimal places