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

Five GCSE retrieval questions · 1 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄7

    Answer: 12⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 53

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 12cm

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 3:3:2

    Answer: 81, 81 and 54
  5. 5. Statistics Mean

    Find the mean of: 11, 14, 14

    Answer: 13

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