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Cornerstone · Grades 3–5 Keystones #1 2 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 47

    Answer: x = 10
  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

    Divide 200 in the ratio 4:3:1

    Answer: 100, 75 and 25
  5. 5. Statistics Mean

    Find the mean of: 5, 12, 16, 17

    Answer: 12.5

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