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Cornerstone · Grades 3–5 Keystones #1 6 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄5

    Answer: 13⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 59

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 4:3:1

    Answer: 72, 54 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 25, 38, 46, 13, 30, 12, 46

    Answer: 30

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