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Cornerstone · Grades 3–5 Keystones #1 22 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄5

    Answer: 22⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 38

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 8cm

    Answer: 8.54cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 29, 33, 29, 29, 40, 37, 45

    Answer: 34.6

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