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Cornerstone · Grades 3–5 Keystones #1 2 October 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 52

    Answer: x = 14
  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 84 in the ratio 2:4:1

    Answer: 24, 48 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 32, 40, 36, 11, 49, 30, 11, 35

    Answer: 30.5

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