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Cornerstone · Grades 3–5 Keystones #1 6 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 5⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 24

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 4:3:1

    Answer: 80, 60 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 50, 17, 34, 35, 5, 20, 50. Give your answer to 2 decimal places

    Answer: 30.14

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