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Cornerstone · Grades 3–5 Keystones #1 26 April 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 37

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 170 in the ratio 3:3:4

    Answer: 51, 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 17, 32, 25, 19, 29, 33, 5, 43

    Answer: 25.4

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