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Cornerstone · Grades 3–5 Keystones #1 17 October 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 October 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 3⁄12

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

    Solve: 4x - 8 = 32

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

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

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

    Share 98 in the ratio 4:3

    Answer: 56 and 42
  5. 5. Statistics Mean

    Find the mean of: 12, 8, 9, 13

    Answer: 10.5

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