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Cornerstone Aug 15 - 21 25 questions
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Monday 15 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 2x + 12 = 26

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 80 in the ratio 1:2:1

    Answer: 20, 40 and 20
  5. 5. Statistics

    Find the mean of: 2, 7, 15

    Answer: 8

Tuesday 16 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 2x + 3 = 25

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Divide 150 in the ratio 1:2:3

    Answer: 25, 50 and 75
  5. 5. Statistics

    Find the mean of: 20, 15, 7, 6

    Answer: 12

Wednesday 17 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 4x - 15 = 29

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 52 in the ratio 2:1:1

    Answer: 26, 13 and 13
  5. 5. Statistics

    Calculate the mean of: 20, 16, 19, 20, 47, 17, 47, 38

    Answer: 28

Thursday 18 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 8x - 9 = 111

    Answer: x = 15
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 209 in the ratio 4:4:3

    Answer: 76, 76 and 57
  5. 5. Statistics

    Calculate the mean of: 25, 46, 49, 13, 46, 34, 37, 19. Give your answer to 2 decimal places

    Answer: 33.63

Friday 19 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 2⁄4

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 4x + 9 = 41

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio

    Divide 98 in the ratio 1:3:3

    Answer: 14, 42 and 42
  5. 5. Statistics

    Find the mean of: 12, 18, 6, 4

    Answer: 10