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Cornerstone · Grades 3–5 Keystones #1 7 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 45 + 47

    Answer: 4835
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 61

    Answer: x = 11
  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 120 in the ratio 1:2:1

    Answer: 30, 60 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 7, 17, 48, 30, 40, 38, 16

    Answer: 28