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Cornerstone Jul 22 - 28 25 questions
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Monday 22 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄8 + 3⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 5x + 5 = 55

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 11cm

    Answer: 11.7cm
  4. 4. Ratio

    Divide 70 in the ratio 2:2:3

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

    Find the mean of: 6, 8, 20

    Answer: 11.333333333333

Tuesday 23 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 2⁄5

    Answer: 31⁄40
  2. 2. Algebra

    Solve: 6x - 10 = 38

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 133 in the ratio 3:1:3

    Answer: 57, 19 and 57
  5. 5. Statistics

    Calculate the mean of: 49, 49, 7, 29, 47, 5, 28, 46

    Answer: 32.5

Wednesday 24 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 1⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 3x - 14 = 22

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics

    Find the mean of: 6, 14, 19

    Answer: 13

Thursday 25 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 3⁄9

    Answer: 4⁄9
  2. 2. Algebra

    Solve: 2x + 6 = 12

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 12.65cm
  4. 4. Ratio

    Share 52 in the ratio 1:3

    Answer: 13 and 39
  5. 5. Statistics

    Calculate the mean of: 23, 42, 21, 43, 34, 39, 33

    Answer: 33.6

Friday 26 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄5

    Answer: 19⁄35
  2. 2. Algebra

    Solve: 7x + 4 = 81

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics

    Calculate the mean of: 12, 44, 37, 25, 32, 20, 33

    Answer: 29