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Cornerstone · Grades 3–5 Keystones #1 26 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 1⁄6

    Answer: 25⁄24
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 36

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 3:4

    Answer: 18 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 14, 46, 19, 10, 8, 50

    Answer: 24.5

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