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Cornerstone · Grades 3–5 Keystones #1 18 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄5

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 19 = 44

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 3:4:4

    Answer: 42, 56 and 56
  5. 5. Statistics Mean

    Find the mean of: 19, 5, 14

    Answer: 12.666666666667

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