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Cornerstone · Grades 3–5 Keystones #1 25 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄4

    Answer: 23⁄20
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 90

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 232 in the ratio 1:1:2

    Answer: 58, 58 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 42, 5, 49, 18, 30, 38, 17

    Answer: 28.4

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