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Cornerstone · Grades 3–5 Keystones #1 12 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 4⁄6

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 37

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

    Calculate the hypotenuse when a = 12cm and b = 14cm

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 1:2:3

    Answer: 22, 44 and 66
  5. 5. Statistics Mean

    Calculate the mean of: 17, 8, 9, 19, 45, 43, 50

    Answer: 27.3

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