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Cornerstone · Grades 3–5 Keystones #1 4 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 6⁄8

    Answer: 3⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x - 19 = 11

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 44, 39, 49, 43, 46, 9, 12

    Answer: 34.6

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