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Cornerstone · Grades 3–5 Keystones #1 26 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 26 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 5⁄8

    Answer: 31⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 37

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics Mean

    Find the mean of: 20, 14, 14, 17, 10

    Answer: 15

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