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Cornerstone · Grades 3–5 Keystones #1 6 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 60

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 174 in the ratio 2:3:1

    Answer: 58, 87 and 29
  5. 5. Statistics Mean

    Find the mean of: 16, 15, 14

    Answer: 15

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