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

Five GCSE retrieval questions · 1 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 5 = 115

    Answer: x = 15
  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 126 in the ratio 4:2:1

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

    Calculate the mean of: 46, 47, 6, 40, 26, 26

    Answer: 31.8

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