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Cornerstone · Grades 3–5 Keystones #1 18 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄5

    Answer: 39⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 12 = 30

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Find the mean of: 15, 10, 5, 21, 4

    Answer: 11

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