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Cornerstone · Grades 3–5 Keystones #1 16 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 56 + 37

    Answer: 5342
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 17

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 8cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 3:1:3

    Answer: 75, 25 and 75
  5. 5. Statistics Mean

    Calculate the mean of: 16, 24, 23, 50, 46, 43, 21, 26

    Answer: 31.1