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Cornerstone · Grades 3–5 Keystones #1 30 December 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 3⁄5

    Answer: 19⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x + 5 = 59

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 4:1

    Answer: 44 and 11
  5. 5. Statistics Mean

    Find the mean of: 20, 19, 16, 17, 5

    Answer: 15.4

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