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

Five GCSE retrieval questions · 5 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x - 13 = -1

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:1:3

    Answer: 12, 12 and 36
  5. 5. Statistics Mean

    Find the mean of: 17, 9, 16

    Answer: 14

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