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Cornerstone May 13 - 19 25 questions
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Monday 13 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 4⁄5

    Answer: 43⁄35
  2. 2. Algebra

    Solve: 5x - 9 = 31

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics

    Find the mean of: 11, 7, 5, 18, 11

    Answer: 10.4

Tuesday 14 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 8x - 11 = 37

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 5cm

    Answer: 6.4cm
  4. 4. Ratio

    Divide 135 in the ratio 2:1:2

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

    Calculate the mean of: 8, 32, 6, 7, 13, 39, 22

    Answer: 18.1

Wednesday 15 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 4x + 10 = 58

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 208 in the ratio 1:4:3

    Answer: 26, 104 and 78
  5. 5. Statistics

    Find the mean of: 12, 13, 9

    Answer: 11.333333333333

Thursday 16 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 5⁄8

    Answer: 67⁄56
  2. 2. Algebra

    Solve: 5x + 12 = 72

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 14.14cm
  4. 4. Ratio

    Divide 77 in the ratio 3:2:2

    Answer: 33, 22 and 22
  5. 5. Statistics

    Find the mean of: 19, 13, 12, 8, 18

    Answer: 14

Friday 17 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 2⁄6

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 8x - 16 = 16

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Divide 180 in the ratio 3:4:2

    Answer: 60, 80 and 40
  5. 5. Statistics

    Calculate the mean of: 15, 31, 6, 12, 38, 19, 30

    Answer: 21.6