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

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 6⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 75

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 4:3:1

    Answer: 96, 72 and 24
  5. 5. Statistics Mean

    Find the mean of: 5, 20, 5, 17, 12

    Answer: 11.8

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