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Cornerstone · Grades 3–5 Keystones #1 7 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 1⁄8

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

    Solve: 6x + 10 = 64

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Divide 161 in the ratio 2:3:2

    Answer: 46, 69 and 46
  5. 5. Statistics Mean

    Calculate the mean of: 37, 50, 18, 43, 38, 41, 13, 25

    Answer: 33.1

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