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Cornerstone · Grades 3–5 Keystones #1 15 May 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 May 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 711 + 111

    Answer: 811
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 62

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 3:1:2

    Answer: 66, 22 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 28, 17, 17, 30, 39, 33, 39, 34

    Answer: 29.6