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Cornerstone · Grades 3–5 Keystones #1 27 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 4⁄8

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 7 = 19

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 30, 41, 28, 5, 42, 37, 20, 28

    Answer: 28.9

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