Reasoning and multi-step problems · Optional extension
L106 · Allow 10–15 minutes for learners ready to move on. Answers are available after an attempt.
Stretch
A £120 item is discounted 15% then its new price increases 10%. Find final price.
Reveal a worked check after attempting
120×0.85×1.10=£112.20.
Deep challenge
Explain why the order of two percentage multipliers does not affect the final number, but the story still matters.
Reveal a worked check after attempting
Multiplication commutes, so factors give the same product; the context determines what each change means and whether it applies.