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Cornerstone Apr 28 - May 4 25 questions
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Monday 28 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 4x + 5 = 41

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 176 in the ratio 2:1:1

    Answer: 88, 44 and 44
  5. 5. Statistics

    Calculate the mean of: 40, 48, 8, 41, 37, 24

    Answer: 33

Tuesday 29 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 3⁄5

    Answer: 41⁄35
  2. 2. Algebra

    Solve: 5x - 6 = 24

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 12.65cm
  4. 4. Ratio

    Divide 184 in the ratio 3:1:4

    Answer: 69, 23 and 92
  5. 5. Statistics

    Find the mean of: 15, 14, 13

    Answer: 14

Wednesday 30 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 4x - 19 = 9

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 145 in the ratio 1:1:3

    Answer: 29, 29 and 87
  5. 5. Statistics

    Find the mean of: 2, 9, 14, 11, 4

    Answer: 8

Thursday 1 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x + 12 = 56

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 8cm

    Answer: 14.42cm
  4. 4. Ratio

    Divide 189 in the ratio 4:4:1

    Answer: 84, 84 and 21
  5. 5. Statistics

    Find the mean of: 6, 2, 11

    Answer: 6.3333333333333

Friday 2 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 11 = 27

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 66 in the ratio 3:1:2

    Answer: 33, 11 and 22
  5. 5. Statistics

    Find the mean of: 11, 14, 12, 2, 17

    Answer: 11.2