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Cornerstone · Grades 3–5 Keystones #1 4 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 1⁄6

    Answer: 31⁄42
  2. 2. Algebra Two-step equations

    Solve: 6x - 5 = 61

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 4:1:2

    Answer: 84, 21 and 42
  5. 5. Statistics Mean

    Find the mean of: 17, 5, 19, 15, 11

    Answer: 13.4

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