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

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

  1. 1. Number Adding fractions

    Add: 5⁄8 + 4⁄5

    Answer: 57⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 45

    Answer: x = 8
  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

    Share 30 in the ratio 3:2

    Answer: 18 and 12
  5. 5. Statistics Mean

    Find the mean of: 3, 20, 18, 13, 5

    Answer: 11.8

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