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Cornerstone · Grades 3–5 Keystones #1 2 June 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄7

    Answer: 38⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 12 = 6

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

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

    Share 95 in the ratio 4:1

    Answer: 76 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 25, 29, 47, 38, 11, 22. Give your answer to 2 decimal places

    Answer: 28.67

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