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Cornerstone · Grades 3–5 Keystones #1 31 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 2⁄8

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 70

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 50 in the ratio 2:2:1

    Answer: 20, 20 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 50, 46, 12, 45, 43, 26

    Answer: 37

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