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

Five GCSE retrieval questions · 3 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 4⁄7

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x - 6 = 34

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 7cm

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 171 in the ratio 3:2:4

    Answer: 57, 38 and 76
  5. 5. Statistics Mean

    Find the mean of: 13, 17, 17, 9

    Answer: 14

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