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Cornerstone · Grades 3–5 Keystones #1 10 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 4⁄5

    Answer: 22⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x - 5 = 35

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 189 in the ratio 2:3:4

    Answer: 42, 63 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 26, 11, 24, 50, 37, 49, 24. Give your answer to 2 decimal places

    Answer: 31.57

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