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Cornerstone · Grades 3–5 Keystones #1 7 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 7 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 3⁄6

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 79

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

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 100 in the ratio 2:1:2

    Answer: 40, 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 19, 8, 18

    Answer: 15

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