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

Five GCSE retrieval questions · 1 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 3⁄7

    Answer: 22⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x - 5 = 60

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

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 117 in the ratio 4:4:1

    Answer: 52, 52 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 37, 15, 13, 12, 20, 38

    Answer: 22.5

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