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

Five GCSE retrieval questions · 5 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 43

    Answer: x = 9
  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

    Share 95 in the ratio 2:3

    Answer: 38 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 7, 34, 31, 42, 33, 11, 25, 48. Give your answer to 2 decimal places

    Answer: 28.88

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