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Cornerstone · Grades 3–5 Keystones #1 11 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄4

    Answer: 19⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 21

    Answer: x = 14
  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 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics Mean

    Calculate the mean of: 14, 42, 16, 7, 16, 18

    Answer: 18.8

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