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Cornerstone · Grades 3–5 Keystones #1 8 April 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄5

    Answer: 32⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x - 11 = 7

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 2:2:3

    Answer: 48, 48 and 72
  5. 5. Statistics Mean

    Find the mean of: 19, 6, 7, 7, 15

    Answer: 10.8

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