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Cornerstone · Grades 3–5 Keystones #1 21 August 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 69 + 29

    Answer: 89
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 27

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 1:3:4

    Answer: 18, 54 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 43, 25, 13, 7, 42, 16

    Answer: 24.3