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Cornerstone · Grades 3–5 Keystones #1 4 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 20 = -2

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

    Calculate the hypotenuse when a = 4cm and b = 7cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:2:1

    Answer: 60, 40 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 36, 12, 5, 34, 37, 28, 47

    Answer: 28.4

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