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Cornerstone · Grades 3–5 Keystones #1 31 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 4⁄7

    Answer: 31⁄42
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 46

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 180 in the ratio 1:1:4

    Answer: 30, 30 and 120
  5. 5. Statistics Mean

    Find the mean of: 4, 16, 14, 7

    Answer: 10.25

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