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Cornerstone · Grades 3–5 Keystones #1 10 April 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 10 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 45

    Answer: x = 7
  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 100 in the ratio 1:2:2

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

    Calculate the mean of: 34, 45, 39, 8, 31, 19, 33

    Answer: 29.9

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