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Cornerstone · Grades 3–5 Keystones #1 13 December 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 13 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 19 = -7

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 261 in the ratio 2:3:4

    Answer: 58, 87 and 116
  5. 5. Statistics Mean

    Find the mean of: 11, 18, 6, 13

    Answer: 12

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