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Cornerstone · Grades 3–5 Keystones #1 1 October 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 2⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 52

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 102 in the ratio 1:3:2

    Answer: 17, 51 and 34
  5. 5. Statistics Mean

    Find the mean of: 25, 8, 12

    Answer: 15

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