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Cornerstone · Grades 3–5 Keystones #1 1 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄5

    Answer: 23⁄40
  2. 2. Algebra Two-step equations

    Solve: 2x + 9 = 21

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 3:1:1

    Answer: 84, 28 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 36, 34, 48, 32, 47, 6, 49

    Answer: 36

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