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Cornerstone · Grades 3–5 Keystones #1 19 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 5⁄6

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 28

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 2:1

    Answer: 26 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 13, 24, 19, 39, 7, 42, 28. Give your answer to 2 decimal places

    Answer: 24.57

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