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

Five GCSE retrieval questions · 3 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 5⁄7

    Answer: 22⁄21
  2. 2. Algebra Two-step equations

    Solve: 8x - 15 = 89

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 2:1:1

    Answer: 68, 34 and 34
  5. 5. Statistics Mean

    Find the mean of: 12, 9, 6

    Answer: 9

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