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Cornerstone · Grades 3–5 Keystones #1 30 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 5⁄7

    Answer: 46⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 67

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 27, 33, 40, 10, 24, 37, 50

    Answer: 31.6

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