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Cornerstone · Grades 3–5 Keystones #1 19 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x - 11 = 87

    Answer: x = 14
  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 72 in the ratio 3:1

    Answer: 54 and 18
  5. 5. Statistics Mean

    Find the mean of: 14, 17, 16

    Answer: 15.666666666667

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