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Cornerstone · Grades 3–5 Keystones #1 11 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 1⁄4

    Answer: 13⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x - 16 = 20

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

    Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 126 in the ratio 3:4

    Answer: 54 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 19, 15, 30, 45, 28, 32, 5, 31. Give your answer to 2 decimal places

    Answer: 25.63