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Cornerstone Dec 17 - 23 25 questions
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Monday 17 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 13 = 19

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 14.21cm
  4. 4. Ratio

    Divide 119 in the ratio 3:2:2

    Answer: 51, 34 and 34
  5. 5. Statistics

    Find the mean of: 16, 18, 11, 6, 4

    Answer: 11

Tuesday 18 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄6

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 5x + 9 = 54

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 13cm

    Answer: 15.81cm
  4. 4. Ratio

    Divide 133 in the ratio 3:2:2

    Answer: 57, 38 and 38
  5. 5. Statistics

    Find the mean of: 20, 15, 12

    Answer: 15.666666666667

Wednesday 19 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 7x - 15 = 48

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 90 in the ratio 2:4:3

    Answer: 20, 40 and 30
  5. 5. Statistics

    Calculate the mean of: 33, 41, 50, 23, 28, 46

    Answer: 36.8

Thursday 20 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 4⁄5

    Answer: 17⁄15
  2. 2. Algebra

    Solve: 6x - 8 = 16

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 8cm

    Answer: 11.31cm
  4. 4. Ratio

    Divide 168 in the ratio 1:4:3

    Answer: 21, 84 and 63
  5. 5. Statistics

    Find the mean of: 10, 7, 16, 20

    Answer: 13.25

Friday 21 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 7x + 9 = 58

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 203 in the ratio 2:3:2

    Answer: 58, 87 and 58
  5. 5. Statistics

    Calculate the mean of: 6, 9, 7, 41, 25, 29, 20

    Answer: 19.6