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Cornerstone · Grades 3–5 Keystones #1 13 October 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 13 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra Two-step equations

    Solve: 4x - 16 = 32

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

    Calculate the hypotenuse when a = 10cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 2:3:4

    Answer: 54, 81 and 108
  5. 5. Statistics Mean

    Find the mean of: 15, 11, 4

    Answer: 10

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