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Cornerstone · Grades 3–5 Keystones #1 18 October 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 18 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 4⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 19 = 16

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 3:2:2

    Answer: 54, 36 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 49, 11, 38, 27, 28, 39, 23, 38

    Answer: 31.6

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