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Cornerstone May 20 - 26 25 questions
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Monday 20 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 29 + 29

    Answer: 49
  2. 2. Algebra

    Solve: 3x + 6 = 42

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 208 in the ratio 1:3:4

    Answer: 26, 78 and 104
  5. 5. Statistics

    Calculate the mean of: 45, 13, 14, 18, 22, 17, 31, 39

    Answer: 24.9

Tuesday 21 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 36 + 28

    Answer: 34
  2. 2. Algebra

    Solve: 6x - 17 = 19

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio

    Divide 210 in the ratio 2:1:4

    Answer: 60, 30 and 120
  5. 5. Statistics

    Find the mean of: 7, 20, 6

    Answer: 11

Wednesday 22 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 57 + 17

    Answer: 67
  2. 2. Algebra

    Solve: 8x - 12 = 52

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 133 in the ratio 2:1:4

    Answer: 38, 19 and 76
  5. 5. Statistics

    Find the mean of: 17, 14, 10

    Answer: 13.666666666667

Thursday 23 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 35 + 56

    Answer: 4330
  2. 2. Algebra

    Solve: 7x + 14 = 63

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio

    Divide 220 in the ratio 3:4:4

    Answer: 60, 80 and 80
  5. 5. Statistics

    Calculate the mean of: 6, 21, 5, 39, 17, 9, 14

    Answer: 15.9

Friday 24 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 34 + 23

    Answer: 1712
  2. 2. Algebra

    Solve: 4x + 15 = 27

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 140 in the ratio 3:4

    Answer: 60 and 80
  5. 5. Statistics

    Find the mean of: 8, 19, 14

    Answer: 13.666666666667