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Cornerstone · Grades 3–5 Keystones #1 22 December 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 22 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 3⁄5

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

    Solve: 7x + 9 = 86

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 10cm

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 220 in the ratio 2:1:2

    Answer: 88, 44 and 88
  5. 5. Statistics Mean

    Find the mean of: 9, 5, 18, 4, 19

    Answer: 11

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