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Cornerstone Apr 6 - 12 25 questions
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Monday 6 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x + 6 = 20

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 80 in the ratio 4:1

    Answer: 64 and 16
  5. 5. Statistics

    Find the mean of: 17, 4, 12

    Answer: 11

Tuesday 7 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 1⁄7

    Answer: 12⁄35
  2. 2. Algebra

    Solve: 7x - 7 = 35

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 15cm

    Answer: 15.52cm
  4. 4. Ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics

    Calculate the mean of: 6, 45, 43, 18, 19, 47

    Answer: 29.7

Wednesday 8 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra

    Solve: 7x - 15 = 62

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 15.56cm
  4. 4. Ratio

    Share 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics

    Calculate the mean of: 10, 5, 46, 26, 8, 7

    Answer: 17

Thursday 9 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄11 + 5⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 6x + 8 = 38

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics

    Find the mean of: 12, 9, 8, 6

    Answer: 8.75

Friday 10 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 3x + 13 = 49

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 12.65cm
  4. 4. Ratio

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics

    Find the mean of: 5, 12, 14

    Answer: 10.333333333333