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Cornerstone · Grades 3–5 Keystones #1 4 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄4

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 62

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 13cm

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 36, 42, 17, 44, 48, 9

    Answer: 32.7

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