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Cornerstone · Grades 3–5 Keystones #1 6 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 5⁄7

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x - 16 = 12

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 104 in the ratio 1:1:2

    Answer: 26, 26 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 41, 15, 43, 26, 38, 44, 16, 11

    Answer: 29.3

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