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

Five GCSE retrieval questions · 7 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄4

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 46

    Answer: x = 9
  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 33 in the ratio 2:1

    Answer: 22 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 39, 38, 16, 45, 28, 10, 27

    Answer: 29

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