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Cornerstone · Grades 3–5 Keystones #1 28 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄4

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

    Solve: 4x - 7 = 49

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 13cm

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Divide 210 in the ratio 3:1:3

    Answer: 90, 30 and 90
  5. 5. Statistics Mean

    Find the mean of: 18, 6, 17

    Answer: 13.666666666667

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