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

Five GCSE retrieval questions · 7 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 7⁄8

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 52

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 252 in the ratio 4:4:1

    Answer: 112, 112 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 28, 15, 46, 48, 19, 16, 29

    Answer: 28.7

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