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Cornerstone · Grades 3–5 Keystones #1 10 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄6

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 21

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 114 in the ratio 3:2:1

    Answer: 57, 38 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 28, 24, 8, 42, 41, 32, 19, 34

    Answer: 28.5

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