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Cornerstone · Grades 3–5 Keystones #1 8 June 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 8 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 19

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

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics Mean

    Find the mean of: 6, 10, 10, 6, 18

    Answer: 10

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