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Cornerstone · Grades 3–5 Keystones #1 19 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 19 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄8

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 27

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 1:2:4

    Answer: 21, 42 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 43, 7, 23, 7, 32, 34, 11, 29

    Answer: 23.25

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