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Cornerstone · Grades 3–5 Keystones #1 13 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 6⁄7

    Answer: 45⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x - 9 = 15

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 4:2:3

    Answer: 60, 30 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 16, 11, 23, 15, 30, 25, 30. Give your answer to 2 decimal places

    Answer: 21.43

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