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Cornerstone · Grades 3–5 Keystones #1 8 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 7⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 62

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 13cm

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 1:4:3

    Answer: 17, 68 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 14, 8, 32, 37, 20, 46, 6, 23

    Answer: 23.3

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