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Cornerstone · Grades 3–5 Keystones #1 24 September 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 24 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 7⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 26

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 128 in the ratio 2:3:3

    Answer: 32, 48 and 48
  5. 5. Statistics Mean

    Find the mean of: 12, 15, 15

    Answer: 14

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