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# Mathematics / Year 5 / Number

Version 9
Curriculum content descriptions

check and explain the reasonableness of solutions to problems including financial contexts using estimation strategies appropriate to the context (AC9M5N08)

Elaborations
• interpreting a series of contextual problems to decide whether an exact answer or an approximate calculation is appropriate; explaining their reasoning in relation to the context and the numbers involved
• recognising the effect of rounding addition, subtraction, multiplication and division calculations, rounding both numbers up, both numbers down, and one number up and one number down; explaining which estimation is the best approximation and why
• considering the type of rounding that is appropriate when estimating the amount of money required; for example, rounding up or rounding down when buying one item from a store using cash, compared to rounding up the cost of every item when buying groceries to estimate the total cost and not rounding when the financial transactions are digital
General capabilities
• Numeracy Numeracy
• Critical and creative thinking Critical and Creative Thinking
ScOT terms

Estimation,  Finance,  Rounding

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