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Cornerstone · Grades 3–5 Keystones #1 4 October 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 October 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 5⁄6

    Answer: 43⁄30
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 9

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 209 in the ratio 4:3:4

    Answer: 76, 57 and 76
  5. 5. Statistics Mean

    Find the mean of: 18, 15, 2, 11

    Answer: 11.5

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