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Cornerstone · Grades 3–5 Keystones #1 16 February 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄8

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

    Solve: 6x - 20 = 4

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 2:3:4

    Answer: 60, 90 and 120
  5. 5. Statistics Mean

    Calculate the mean of: 29, 28, 28, 50, 22, 32, 42, 11

    Answer: 30.25

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