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Cornerstone · Grades 3–5 Keystones #1 28 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 3⁄4

    Answer: 25⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 47

    Answer: x = 6
  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 232 in the ratio 3:1:4

    Answer: 87, 29 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 23, 6, 36, 19, 32, 15

    Answer: 21.8

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