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Cornerstone · Grades 3–5 Keystones #1 3 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 76

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 153 in the ratio 4:2:3

    Answer: 68, 34 and 51
  5. 5. Statistics Mean

    Find the mean of: 3, 20, 20, 13

    Answer: 14

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