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Cornerstone · Grades 3–5 Keystones #1 26 April 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 26 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄4

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 50

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

    Calculate the hypotenuse when a = 7cm and b = 6cm

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 1:3:4

    Answer: 18, 54 and 72
  5. 5. Statistics Mean

    Find the mean of: 6, 18, 8

    Answer: 10.666666666667

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