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Cornerstone · Grades 3–5 Keystones #1 22 July 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 22 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄5

    Answer: 13⁄20
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 22

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 240 in the ratio 3:4:1

    Answer: 90, 120 and 30
  5. 5. Statistics Mean

    Find the mean of: 15, 19, 6

    Answer: 13.333333333333

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