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Cornerstone · Grades 3–5 Keystones #1 3 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 13

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 29, 47, 12, 13, 19, 40. Give your answer to 2 decimal places

    Answer: 26.67

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