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Cornerstone · Grades 3–5 Keystones #1 30 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 5⁄7

    Answer: 22⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 32

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

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Share 98 in the ratio 3:4

    Answer: 42 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 38, 44, 5, 30, 20, 12

    Answer: 24.8

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