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Cornerstone · Grades 3–5 Keystones #1 25 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄5

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 24

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 2:1

    Answer: 16 and 8
  5. 5. Statistics Mean

    Find the mean of: 12, 6, 14

    Answer: 10.666666666667

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