Change pack
Cornerstone Feb 17 - 23 25 questions
PDF (questions) PDF (answers)

Monday 17 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 7⁄8

    Answer: 13⁄8
  2. 2. Algebra

    Solve: 3x - 6 = 18

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 140 in the ratio 1:2:2

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

    Calculate the mean of: 43, 34, 20, 38, 19, 32, 32, 27

    Answer: 30.6

Tuesday 18 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 5⁄6

    Answer: 35⁄24
  2. 2. Algebra

    Solve: 7x - 14 = 84

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 175 in the ratio 4:2:1

    Answer: 100, 50 and 25
  5. 5. Statistics

    Calculate the mean of: 15, 15, 6, 26, 35, 13, 13

    Answer: 17.6

Wednesday 19 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 3⁄10

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 7x + 11 = 60

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 5cm

    Answer: 10.3cm
  4. 4. Ratio

    Divide 80 in the ratio 3:1:1

    Answer: 48, 16 and 16
  5. 5. Statistics

    Find the mean of: 9, 3, 3

    Answer: 5

Thursday 20 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 5⁄7

    Answer: 41⁄28
  2. 2. Algebra

    Solve: 2x + 12 = 20

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 280 in the ratio 1:2:2

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

    Calculate the mean of: 34, 45, 12, 7, 11, 18, 50

    Answer: 25.3

Friday 21 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 5x - 16 = 14

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 15cm

    Answer: 15.81cm
  4. 4. Ratio

    Divide 145 in the ratio 1:3:1

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

    Find the mean of: 16, 16, 19, 14, 18

    Answer: 16.6