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Cornerstone Jan 21 - 27 25 questions
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Monday 21 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 1⁄10

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 2x + 13 = 23

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics

    Calculate the mean of: 27, 49, 21, 11, 40, 35

    Answer: 30.5

Tuesday 22 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 3⁄5

    Answer: 26⁄35
  2. 2. Algebra

    Solve: 4x + 13 = 37

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 14cm

    Answer: 16.12cm
  4. 4. Ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics

    Calculate the mean of: 20, 36, 35, 20, 20, 11

    Answer: 23.7

Wednesday 23 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 6x - 6 = 42

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 68 in the ratio 1:3

    Answer: 17 and 51
  5. 5. Statistics

    Find the mean of: 10, 15, 20

    Answer: 15

Thursday 24 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x - 13 = 7

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 108 in the ratio 3:1:2

    Answer: 54, 18 and 36
  5. 5. Statistics

    Calculate the mean of: 6, 8, 41, 9, 7, 7, 47

    Answer: 17.9

Friday 25 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 3⁄4

    Answer: 41⁄28
  2. 2. Algebra

    Solve: 5x + 14 = 39

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 168 in the ratio 1:3:3

    Answer: 24, 72 and 72
  5. 5. Statistics

    Find the mean of: 8, 6, 18

    Answer: 10.666666666667