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Cornerstone · Grades 3–5 Keystones #1 17 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x - 17 = -7

    Answer: x = 5
  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 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics Mean

    Find the mean of: 14, 6, 15

    Answer: 11.666666666667

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