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Cornerstone · Grades 3–5 Keystones #1 2 October 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 October 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 16

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

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 4:1

    Answer: 56 and 14
  5. 5. Statistics Mean

    Find the mean of: 12, 11, 6, 13

    Answer: 10.5

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