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Cornerstone · Grades 3–5 Keystones #1 16 October 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄5

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 43

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

    Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics Mean

    Find the mean of: 16, 6, 13, 17

    Answer: 13

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