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Cornerstone · Grades 3–5 Keystones #1 4 June 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 4⁄8

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x - 14 = 63

    Answer: x = 11
  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 170 in the ratio 3:3:4

    Answer: 51, 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 40, 41, 8, 21, 40, 20, 7. Give your answer to 2 decimal places

    Answer: 25.29

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