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Cornerstone · Grades 3–5 Keystones #1 23 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 5⁄6

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 41

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 3:1:2

    Answer: 66, 22 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 28, 36, 50, 17, 10, 19, 9, 38. Give your answer to 2 decimal places

    Answer: 25.88

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