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Cornerstone · Grades 3–5 Keystones #1 6 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄4

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 10 = 35

    Answer: x = 9
  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

    Divide 174 in the ratio 2:3:1

    Answer: 58, 87 and 29
  5. 5. Statistics Mean

    Find the mean of: 3, 4, 10, 10, 9

    Answer: 7.2

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