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Cornerstone · Grades 3–5 Keystones #1 8 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 8 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 3⁄5

    Answer: 41⁄35
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 19

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Find the mean of: 10, 11, 6, 9, 14

    Answer: 10

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