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Cornerstone · Grades 3–5 Keystones #1 26 February 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 26 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 1⁄6

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x + 15 = 25

    Answer: x = 5
  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

    Divide 234 in the ratio 4:4:1

    Answer: 104, 104 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 16, 23, 23, 13, 22, 47, 16. Give your answer to 2 decimal places

    Answer: 22.86

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