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Cornerstone Feb 11 - 17 25 questions
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Monday 11 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄11 + 4⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 8x - 19 = 21

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio

    Share 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics

    Find the mean of: 10, 4, 12

    Answer: 8.6666666666667

Tuesday 12 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 7x - 19 = 30

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics

    Find the mean of: 2, 14, 6, 9

    Answer: 7.75

Wednesday 13 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 7 = 57

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 4cm

    Answer: 8.06cm
  4. 4. Ratio

    Share 72 in the ratio 1:2

    Answer: 24 and 48
  5. 5. Statistics

    Calculate the mean of: 27, 22, 25, 5, 17, 17, 16, 22

    Answer: 18.9

Thursday 14 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 5x + 11 = 56

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 9cm

    Answer: 14.21cm
  4. 4. Ratio

    Divide 104 in the ratio 3:3:2

    Answer: 39, 39 and 26
  5. 5. Statistics

    Find the mean of: 10, 6, 6, 4, 17

    Answer: 8.6

Friday 15 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 8x - 9 = 55

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 216 in the ratio 2:3:4

    Answer: 48, 72 and 96
  5. 5. Statistics

    Calculate the mean of: 35, 27, 44, 11, 41, 21, 18

    Answer: 28.1