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Cornerstone · Grades 3–5 Keystones #1 9 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄4

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

    Solve: 8x - 16 = 80

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 3:2:1

    Answer: 42, 28 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 39, 32, 32, 26, 6, 20, 9, 12

    Answer: 22

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