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Cornerstone · Grades 3–5 Keystones #1 13 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 92

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 3:1:2

    Answer: 81, 27 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 15, 24, 10, 42, 39, 15, 14

    Answer: 22.7

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