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Cornerstone · Grades 3–5 Keystones #1 4 April 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 April 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄4

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 18 = 0

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 3:1:1

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

    Calculate the mean of: 48, 20, 26, 18, 24, 13, 18, 48. Give your answer to 2 decimal places

    Answer: 26.88

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