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Cornerstone · Grades 3–5 Keystones #1 19 March 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 19 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

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

    Solve: 4x + 12 = 40

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 38, 50, 28, 11, 45, 42, 44, 32

    Answer: 36.25

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