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Cornerstone · Grades 3–5 Keystones #1 14 October 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 October 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄6

    Answer: 22⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 13 = 64

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 4:1

    Answer: 76 and 19
  5. 5. Statistics Mean

    Find the mean of: 19, 8, 12, 12

    Answer: 12.75

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