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Cornerstone · Grades 3–5 Keystones #1 26 May 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 May 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 5⁄8

    Answer: 75⁄56
  2. 2. Algebra Two-step equations

    Solve: 8x - 20 = 20

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 3:2

    Answer: 48 and 32
  5. 5. Statistics Mean

    Find the mean of: 7, 3, 5, 9, 13

    Answer: 7.4

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