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Cornerstone · Grades 3–5 Keystones #1 14 December 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 3⁄5

    Answer: 59⁄40
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 44

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:4:1

    Answer: 16, 64 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 20, 29, 24, 36, 12, 9

    Answer: 21.7

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