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

Five GCSE retrieval questions · 1 January 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

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

    Solve: 7x + 5 = 26

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

    Calculate the hypotenuse when a = 4cm and b = 7cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 119 in the ratio 4:1:2

    Answer: 68, 17 and 34
  5. 5. Statistics Mean

    Find the mean of: 20, 8, 11

    Answer: 13

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