approximate numerical solutions to problems involving rational numbers and percentages, using appropriate estimation strategies
Elaborations
using familiar fractions, decimals and percentages to approximate calculations, such as 0.3 of 180 is about 13of 180, or 52% is about 12
choosing appropriate estimation strategies including rounding to the nearest whole number, knowledge of multiples of 2, 5 or 10 and partitioning numbers, in contexts such as measuring or cost per unit
recognising the effect of rounding on calculations involving fractions or decimals and saying what numbers the answer will be between
recognising the usefulness of estimation to check calculations for contexts such as dividing wood into a number of lengths, calculating cost per unit, reducing a recipe or dividing the cost of dinner for a group into individual amounts
verifying solutions by estimating percentages in suitable contexts, such as discounts, using common percentages of 10%, 25%, 30%, 50% and 1%
investigating estimation strategies to make decisions about steam cooking in ground ovens by Aboriginal and/or Torres Strait Islander Peoples, including catering for different numbers of people and resources needed for cooking
Code
VC2M6N08
Curriculum resources and support
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