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Cornerstone · Grades 3–5 Keystones #1 9 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 2⁄5

    Answer: 29⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x + 3 = 24

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 1:2:4

    Answer: 10, 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 15, 28, 6, 32, 44, 8, 32, 18. Give your answer to 2 decimal places

    Answer: 22.88

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