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Cornerstone · Grades 3–5 Keystones #1 1 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 3x + 8 = 38

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Share 49 in the ratio 3:4

    Answer: 21 and 28
  5. 5. Statistics Mean

    Find the mean of: 12, 13, 3, 8

    Answer: 9

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