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Cornerstone · Grades 3–5 Keystones #1 30 August 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 30 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 37

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 3:4:1

    Answer: 69, 92 and 23
  5. 5. Statistics Mean

    Calculate the mean of: 16, 13, 37, 23, 12, 42, 10

    Answer: 21.9

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