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Cornerstone · Grades 3–5 Keystones #1 17 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄6

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

    Solve: 5x + 10 = 25

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

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Share 63 in the ratio 4:3

    Answer: 36 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 37, 16, 41, 30, 47, 34, 39

    Answer: 34.9

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