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Cornerstone · Grades 3–5 Keystones #1 19 August 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 3⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 6 = 46

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 4:3:4

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

    Calculate the mean of: 37, 15, 47, 35, 34, 38, 31

    Answer: 33.9

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