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Cornerstone · Grades 3–5 Keystones #1 31 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 4⁄6

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 49

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 10cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 31, 17, 27, 39, 26, 24, 35, 44

    Answer: 30.4

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