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Cornerstone Oct 7 - 13 25 questions
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Monday 7 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄4

    Answer: 9⁄8
  2. 2. Algebra

    Solve: 5x + 8 = 63

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 95 in the ratio 1:4

    Answer: 19 and 76
  5. 5. Statistics

    Find the mean of: 10, 7, 8

    Answer: 8.3333333333333

Tuesday 8 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 5x + 15 = 55

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics

    Find the mean of: 10, 12, 8, 18, 8

    Answer: 11.2

Wednesday 9 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 8x - 18 = 78

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 14cm

    Answer: 15.23cm
  4. 4. Ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics

    Calculate the mean of: 9, 44, 16, 35, 13, 6, 11, 49

    Answer: 22.9

Thursday 10 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra

    Solve: 3x - 8 = 16

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics

    Calculate the mean of: 11, 33, 8, 46, 37, 44, 9

    Answer: 26.9

Friday 11 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 7x + 11 = 60

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio

    Share 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics

    Find the mean of: 15, 9, 3, 17, 18

    Answer: 12.4