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Cornerstone · Grades 3–5 Keystones #1 23 December 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

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

    Solve: 6x - 16 = 50

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 1:1:2

    Answer: 28, 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 13

    Answer: 11

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