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Cornerstone · Grades 3–5 Keystones #1 23 October 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 4⁄6

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 3x + 10 = 43

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 3:1:3

    Answer: 57, 19 and 57
  5. 5. Statistics Mean

    Find the mean of: 10, 10, 4

    Answer: 8

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