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Cornerstone Dec 14 - 20 25 questions
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Monday 14 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x + 7 = 35

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 15 in the ratio 1:2

    Answer: 5 and 10
  5. 5. Statistics

    Calculate the mean of: 38, 29, 42, 15, 46, 18, 35. Give your answer to 2 decimal places

    Answer: 31.86

Tuesday 15 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x - 18 = 12

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio

    Share 90 in the ratio 3:2

    Answer: 54 and 36
  5. 5. Statistics

    Find the mean of: 12, 17, 7

    Answer: 12

Wednesday 16 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 2⁄3

    Answer: 26⁄21
  2. 2. Algebra

    Solve: 2x - 20 = -12

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics

    Find the mean of: 9, 23, 13

    Answer: 15

Thursday 17 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 2⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x + 6 = 55

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics

    Calculate the mean of: 26, 13, 44, 10, 35, 39, 23, 36

    Answer: 28.25

Friday 18 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 6⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 5x + 5 = 40

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio

    Share 60 in the ratio 3:2

    Answer: 36 and 24
  5. 5. Statistics

    Calculate the mean of: 28, 28, 44, 18, 36, 11, 47. Give your answer to 2 decimal places

    Answer: 30.29