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Cornerstone · Grades 3–5 Keystones #1 28 September 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄8

    Answer: 31⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 23

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

    Calculate the hypotenuse when a = 7cm and b = 11cm

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 2:3:3

    Answer: 40, 60 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 32, 41, 39, 30, 43, 6, 38, 12

    Answer: 30.1

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