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Cornerstone · Grades 3–5 Keystones #1 21 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄7

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x - 10 = -2

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

    Calculate the hypotenuse when a = 5cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.07cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 17, 31, 47, 28, 38, 28

    Answer: 31.5

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