Change pack
Cornerstone Feb 3 - 9 25 questions
PDF (questions) PDF (answers)

Monday 3 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 5⁄8

    Answer: 35⁄24
  2. 2. Algebra

    Solve: 3x + 15 = 27

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 260 in the ratio 4:3:3

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

    Find the mean of: 13, 2, 8

    Answer: 7.6666666666667

Tuesday 4 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 3⁄6

    Answer: 13⁄14
  2. 2. Algebra

    Solve: 6x + 15 = 87

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 14cm

    Answer: 14.87cm
  4. 4. Ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics

    Calculate the mean of: 21, 45, 5, 17, 5, 21

    Answer: 19

Wednesday 5 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 8x - 18 = 22

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics

    Find the mean of: 8, 2, 7, 15, 5

    Answer: 7.4

Thursday 6 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 1⁄7

    Answer: 13⁄42
  2. 2. Algebra

    Solve: 8x - 11 = 69

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 9.22cm
  4. 4. Ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics

    Find the mean of: 17, 13, 9, 18

    Answer: 14.25

Friday 7 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 7x + 11 = 88

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics

    Calculate the mean of: 45, 38, 49, 18, 19, 42, 22, 40

    Answer: 34.1