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Cornerstone · Grades 3–5 Keystones #1 13 July 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 July 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄4

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 10 = 66

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 3:3:2

    Answer: 54, 54 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 5, 45, 47, 45, 26, 46. Give your answer to 2 decimal places

    Answer: 35.67

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