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Cornerstone · Grades 3–5 Keystones #1 11 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 3⁄8

    Answer: 53⁄56
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 43

    Answer: x = 6
  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 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Find the mean of: 12, 12, 7

    Answer: 10.333333333333

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