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Cornerstone · Grades 3–5 Keystones #1 21 December 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 49

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

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 250 in the ratio 2:1:2

    Answer: 100, 50 and 100
  5. 5. Statistics Mean

    Calculate the mean of: 49, 32, 5, 45, 39, 8, 38, 23. Give your answer to 2 decimal places

    Answer: 29.88

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