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Cornerstone · Grades 3–5 Keystones #1 28 June 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 28 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 2⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 18

    Answer: x = 4
  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 145 in the ratio 1:2:2

    Answer: 29, 58 and 58
  5. 5. Statistics Mean

    Find the mean of: 7, 17, 14, 4

    Answer: 10.5

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