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Cornerstone · Grades 3–5 Keystones #1 14 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 19 = 2

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 4:1:2

    Answer: 72, 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 28, 30, 19, 40, 14, 12, 42

    Answer: 26.4

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