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Cornerstone · Grades 3–5 Keystones #1 4 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄8

    Answer: 37⁄40
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 24

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

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 3:1:2

    Answer: 48, 16 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 13, 25, 47, 7, 24, 17, 29, 6

    Answer: 21

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