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Cornerstone · Grades 3–5 Keystones #1 18 March 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 18 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 82

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 7cm

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 3:1:4

    Answer: 36, 12 and 48
  5. 5. Statistics Mean

    Find the mean of: 10, 8, 19

    Answer: 12.333333333333

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