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Cornerstone · Grades 3–5 Keystones #1 3 June 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 7 = 15

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 1:4:4

    Answer: 18, 72 and 72
  5. 5. Statistics Mean

    Find the mean of: 3, 8, 7

    Answer: 6

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