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Cornerstone · Grades 3–5 Keystones #1 19 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 19 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x - 10 = 10

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 1:2:1

    Answer: 38, 76 and 38
  5. 5. Statistics Mean

    Find the mean of: 3, 15, 2, 3, 2

    Answer: 5

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