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Cornerstone · Grades 3–5 Keystones #1 18 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄4

    Answer: 9⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 67

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 4:4:3

    Answer: 64, 64 and 48
  5. 5. Statistics Mean

    Find the mean of: 3, 19, 9

    Answer: 10.333333333333

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