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Cornerstone · Grades 3–5 Keystones #1 15 May 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 May 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 45

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 3:2:1

    Answer: 36, 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 10, 5, 19, 14

    Answer: 12

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