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Cornerstone · Grades 3–5 Keystones #1 12 April 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 12 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 51

    Answer: x = 8
  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 140 in the ratio 2:4:1

    Answer: 40, 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 13, 18, 8, 15

    Answer: 13.5

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