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Cornerstone · Grades 3–5 Keystones #1 9 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 4⁄5

    Answer: 43⁄35
  2. 2. Algebra Two-step equations

    Solve: 7x - 15 = 48

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 180 in the ratio 3:1:2

    Answer: 90, 30 and 60
  5. 5. Statistics Mean

    Find the mean of: 7, 10, 12, 11

    Answer: 10

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