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Cornerstone · Grades 3–5 Keystones #1 9 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 29

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

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:2:1

    Answer: 21, 42 and 21
  5. 5. Statistics Mean

    Find the mean of: 12, 15, 18

    Answer: 15

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