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

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

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

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

    Solve: 3x - 15 = 9

    Answer: x = 8
  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 242 in the ratio 4:3:4

    Answer: 88, 66 and 88
  5. 5. Statistics Mean

    Calculate the mean of: 18, 25, 13, 8, 19, 45, 36

    Answer: 23.4

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