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Cornerstone · Grades 3–5 Keystones #1 24 January 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 24 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 71

    Answer: x = 11
  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 152 in the ratio 3:2:3

    Answer: 57, 38 and 57
  5. 5. Statistics Mean

    Find the mean of: 9, 5, 2, 15, 16

    Answer: 9.4

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