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Cornerstone · Grades 3–5 Keystones #1 14 June 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 79 + 19

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

    Solve: 2x - 12 = 6

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 10cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 4:3:1

    Answer: 104, 78 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 34, 37, 40, 33, 9, 40

    Answer: 32.2