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Cornerstone · Grades 3–5 Keystones #1 11 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 5 = 100

    Answer: x = 15
  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 75 in the ratio 3:2

    Answer: 45 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 40, 12, 42, 18, 42, 28, 38, 41

    Answer: 32.6

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