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Cornerstone · Grades 3–5 Keystones #1 22 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 3⁄6

    Answer: 11⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x - 14 = 10

    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 70 in the ratio 1:4:2

    Answer: 10, 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 13, 15, 13, 18

    Answer: 14.75

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