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Cornerstone · Grades 3–5 Keystones #1 7 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 4⁄7

    Answer: 39⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 70

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 3:1

    Answer: 42 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 40, 14, 14, 36, 41, 36. Give your answer to 2 decimal places

    Answer: 30.17

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