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Cornerstone · Grades 3–5 Keystones #1 21 May 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 21 May 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = 11

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

    Calculate the hypotenuse when a = 11cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 4:1:3

    Answer: 104, 26 and 78
  5. 5. Statistics Mean

    Find the mean of: 3, 9, 9, 3

    Answer: 6

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