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Cornerstone · Grades 3–5 Keystones #1 27 June 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄7

    Answer: 19⁄28
  2. 2. Algebra Two-step equations

    Solve: 3x + 4 = 25

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 3:4

    Answer: 18 and 24
  5. 5. Statistics Mean

    Find the mean of: 17, 11, 20

    Answer: 16

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