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Cornerstone · Grades 3–5 Keystones #1 18 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 64

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 1:3

    Answer: 10 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 46, 14, 36, 49, 30, 10, 45

    Answer: 32.9

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