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Cornerstone · Grades 3–5 Keystones #1 2 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 67

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 250 in the ratio 1:2:2

    Answer: 50, 100 and 100
  5. 5. Statistics Mean

    Calculate the mean of: 22, 22, 28, 9, 47, 8, 38

    Answer: 24.9

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