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Cornerstone · Grades 3–5 Keystones #1 17 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 5⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 55

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 3:2:1

    Answer: 54, 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 2, 11, 10, 13

    Answer: 9

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