approximate numerical solutions to problems involving rational numbers and percentages, including financial contexts, using appropriate estimation strategies

How Bloomi helps with this

This is a readiness-year topic that builds towards the next NAPLAN year. Bloomi practises it as curriculum mastery, never test drilling.

What this looks like in the classroom

• using familiar fractions, decimals and percentages to approximate calculations, such as, \(0.3\) of \(180\) is about a \(\frac13\) of \(180\) or \(52\)% is about a \(\frac12\)
• 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