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Cornerstone · Grades 3–5 Keystones #1 12 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 12 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 2⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 13

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

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 4:2:1

    Answer: 100, 50 and 25
  5. 5. Statistics Mean

    Find the mean of: 10, 17, 6

    Answer: 11

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