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Cornerstone · Grades 3–5 Keystones #1 17 May 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 May 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄5

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x - 15 = 15

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 156 in the ratio 2:1:3

    Answer: 52, 26 and 78
  5. 5. Statistics Mean

    Calculate the mean of: 13, 33, 10, 33, 45, 43, 25, 39. Give your answer to 2 decimal places

    Answer: 30.13

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