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Cornerstone · Grades 3–5 Keystones #1 1 February 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 3⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 18

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

    Calculate the hypotenuse when a = 11cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 68 in the ratio 1:2:1

    Answer: 17, 34 and 17
  5. 5. Statistics Mean

    Find the mean of: 6, 20, 19, 18, 7

    Answer: 14

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