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Cornerstone · Grades 3–5 Keystones #1 14 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 14

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 3:4:1

    Answer: 60, 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 19, 10, 18

    Answer: 15.666666666667

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