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Cornerstone · Grades 3–5 Keystones #1 22 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄4

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

    Solve: 3x - 12 = 9

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:1

    Answer: 30 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 35, 9, 13, 50, 29, 47

    Answer: 30.5

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