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Cornerstone · Grades 3–5 Keystones #1 17 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 4⁄8

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 20

    Answer: x = 3
  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

    Divide 144 in the ratio 2:3:1

    Answer: 48, 72 and 24
  5. 5. Statistics Mean

    Find the mean of: 6, 15, 20, 16

    Answer: 14.25

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