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Cornerstone Mar 30 - Apr 5 25 questions
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Monday 30 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 7x - 12 = 58

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 5cm

    Answer: 11.18cm
  4. 4. Ratio

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics

    Find the mean of: 13, 12, 9, 7, 3

    Answer: 8.8

Tuesday 31 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 2⁄3

    Answer: 19⁄24
  2. 2. Algebra

    Solve: 3x + 12 = 42

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics

    Calculate the mean of: 15, 6, 25, 28, 22, 35

    Answer: 21.8

Wednesday 1 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 3x + 6 = 18

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 198 in the ratio 3:4:2

    Answer: 66, 88 and 44
  5. 5. Statistics

    Calculate the mean of: 42, 8, 11, 22, 7, 29, 17, 10

    Answer: 18.3

Thursday 2 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 6⁄8

    Answer: 5⁄4
  2. 2. Algebra

    Solve: 5x - 14 = 56

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 9.9cm
  4. 4. Ratio

    Divide 196 in the ratio 2:4:1

    Answer: 56, 112 and 28
  5. 5. Statistics

    Calculate the mean of: 5, 16, 24, 21, 19, 12, 38, 27

    Answer: 20.3

Friday 3 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 8x - 18 = 70

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 189 in the ratio 2:4:1

    Answer: 54, 108 and 27
  5. 5. Statistics

    Find the mean of: 5, 10, 5, 16

    Answer: 9