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Cornerstone · Grades 3–5 Keystones #1 14 May 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 May 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄6

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 70

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:2:2

    Answer: 24, 48 and 48
  5. 5. Statistics Mean

    Find the mean of: 14, 3, 15, 14

    Answer: 11.5

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