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Cornerstone · Grades 3–5 Keystones #1 28 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

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

    Solve: 7x - 13 = 15

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 6cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 2:3

    Answer: 30 and 45
  5. 5. Statistics Mean

    Find the mean of: 12, 5, 18, 6

    Answer: 10.25

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