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Cornerstone · Grades 3–5 Keystones #1 13 May 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 May 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄3

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 88

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 6cm

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 4:1:1

    Answer: 88, 22 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 21, 38, 17, 26, 28, 37

    Answer: 27.8

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