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Cornerstone · Grades 3–5 Keystones #1 2 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄8

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 14

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

    Calculate the hypotenuse when a = 7cm and b = 4cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 4:1:4

    Answer: 48, 12 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 10, 35, 46, 21, 8, 42, 35, 9

    Answer: 25.8

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