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X01 · Optional projects jobYear 4 Maths · T2 W13–14 · Projects / X01
Six display packs each hold seven cards. Two cards from each pack need replacing, plus three spare cards. How many replacement cards should be prepared?
Use scrap paper or a private explanation. No purchase, household information or public performance.
Adult teaching after an own try
Answer
6 × 2 + 3 = 15 replacement cards; 42 is the original packed total, not the replacement request.
Why
Discriminate relevant quantities rather than multiply every number.
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