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Cornerstone · Grades 3–5 Keystones #1 18 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 14

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 6cm

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 1:1:3

    Answer: 27, 27 and 81
  5. 5. Statistics Mean

    Find the mean of: 15, 3, 4, 7

    Answer: 7.25

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