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Cornerstone · Grades 3–5 Keystones #1 11 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄8

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

    Solve: 7x + 8 = 64

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

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 3:1:3

    Answer: 39, 13 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 39, 29, 30, 13, 25, 19. Give your answer to 2 decimal places

    Answer: 25.83

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