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Cornerstone · Grades 3–5 Keystones #1 15 July 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 46

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Divide 75 in the ratio 1:2:2

    Answer: 15, 30 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 20, 32, 31, 45, 43, 49, 43

    Answer: 37.6

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