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Cornerstone · Grades 3–5 Keystones #1 6 October 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 1⁄6

    Answer: 25⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x + 14 = 62

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 99 in the ratio 4:4:1

    Answer: 44, 44 and 11
  5. 5. Statistics Mean

    Find the mean of: 2, 20, 10, 12

    Answer: 11

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