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Cornerstone · Grades 3–5 Keystones #1 22 February 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 February 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 40

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 11cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 2:3

    Answer: 28 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 8, 37, 44, 27, 32, 12

    Answer: 26.7

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