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Cornerstone · Grades 3–5 Keystones #1 19 May 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄8

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 46

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 12cm

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 4:4:3

    Answer: 72, 72 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 45, 44, 37, 27, 34, 46, 23

    Answer: 36.6

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