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Cornerstone · Grades 3–5 Keystones #1 4 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 7⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 4 = 19

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 114 in the ratio 4:1:1

    Answer: 76, 19 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 46, 37, 19, 43, 10, 50. Give your answer to 2 decimal places

    Answer: 34.17

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