Fractions Inside Reverse Calculations: Finding the Original Amount (Teach This Topic)
This guide supports teaching learners aged 11 to 16 how to recover an original amount from a known fraction, percentage or multiplier. It begins with equal parts and inverse operations, then develops reciprocal fractions, percentage multipliers, algebra and multi-step problems. Use the worked examples, checks and optional challenge to match the pace to the learner’s understanding.
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