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Cornerstone · Grades 3–5 Keystones #1 10 July 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄4

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 25

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 1:4:4

    Answer: 22, 88 and 88
  5. 5. Statistics Mean

    Calculate the mean of: 7, 34, 49, 13, 5, 20, 43. Give your answer to 2 decimal places

    Answer: 24.43

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