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Cornerstone · Grades 3–5 Keystones #1 25 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 1⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 7 = 57

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 13cm

    Answer: 17.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 4:2:3

    Answer: 96, 48 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 14, 36, 15, 30, 40, 30

    Answer: 27.5

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