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Cornerstone Mar 29 - Apr 4 25 questions
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Monday 29 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 3⁄5

    Answer: 17⁄20
  2. 2. Algebra

    Solve: 4x - 12 = 8

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics

    Find the mean of: 17, 4, 20, 2, 5

    Answer: 9.6

Tuesday 30 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 4⁄6

    Answer: 25⁄24
  2. 2. Algebra

    Solve: 4x - 20 = -4

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 12.73cm
  4. 4. Ratio

    Share 65 in the ratio 4:1

    Answer: 52 and 13
  5. 5. Statistics

    Find the mean of: 11, 4, 6, 6

    Answer: 6.75

Wednesday 31 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x + 4 = 40

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics

    Calculate the mean of: 9, 43, 7, 29, 31, 6, 18, 19

    Answer: 20.3

Thursday 1 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 2⁄4

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 4x + 4 = 16

    Answer: x = 3
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 196 in the ratio 1:2:4

    Answer: 28, 56 and 112
  5. 5. Statistics

    Calculate the mean of: 49, 23, 33, 24, 27, 27, 31, 8

    Answer: 27.8

Friday 2 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 3x + 8 = 20

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 7cm

    Answer: 9.22cm
  4. 4. Ratio

    Divide 153 in the ratio 1:4:4

    Answer: 17, 68 and 68
  5. 5. Statistics

    Calculate the mean of: 47, 47, 11, 21, 27, 9, 38, 40

    Answer: 30