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Cornerstone Jul 17 - 23 25 questions
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Monday 17 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄11 + 6⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 5x + 9 = 59

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 184 in the ratio 1:1:2

    Answer: 46, 46 and 92
  5. 5. Statistics

    Calculate the mean of: 10, 29, 12, 24, 9, 34, 23. Give your answer to 2 decimal places

    Answer: 20.14

Tuesday 18 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 2⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 3x + 13 = 37

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Divide 161 in the ratio 3:1:3

    Answer: 69, 23 and 69
  5. 5. Statistics

    Calculate the mean of: 31, 22, 36, 6, 14, 37, 39. Give your answer to 2 decimal places

    Answer: 26.43

Wednesday 19 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 1⁄3

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 8x - 18 = 30

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio

    Divide 96 in the ratio 1:3:2

    Answer: 16, 48 and 32
  5. 5. Statistics

    Find the mean of: 14, 8, 11

    Answer: 11

Thursday 20 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 3⁄10

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 7x - 12 = 23

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 110 in the ratio 3:1:1

    Answer: 66, 22 and 22
  5. 5. Statistics

    Calculate the mean of: 13, 44, 22, 13, 41, 31, 11

    Answer: 25

Friday 21 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄8

    Answer: 5⁄4
  2. 2. Algebra

    Solve: 3x + 13 = 25

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio

    Divide 270 in the ratio 4:2:3

    Answer: 120, 60 and 90
  5. 5. Statistics

    Find the mean of: 11, 2, 14

    Answer: 9