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Cornerstone · Grades 3–5 Keystones #1 18 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 4⁄5

    Answer: 53⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 47

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 48, 6, 19, 5, 38, 40

    Answer: 26

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