Change pack
Cornerstone May 12 - 18 25 questions
PDF (questions) PDF (answers)

Monday 12 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 59 + 19

    Answer: 23
  2. 2. Algebra

    Solve: 2x - 19 = 3

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics

    Find the mean of: 7, 18, 12, 11, 8

    Answer: 11.2

Tuesday 13 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 46 + 45

    Answer: 2215
  2. 2. Algebra

    Solve: 7x + 8 = 85

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 15cm

    Answer: 18.03cm
  4. 4. Ratio

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics

    Calculate the mean of: 12, 23, 11, 35, 49, 8, 39

    Answer: 25.3

Wednesday 14 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 56 + 67

    Answer: 7142
  2. 2. Algebra

    Solve: 5x + 10 = 55

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 15cm

    Answer: 18.6cm
  4. 4. Ratio

    Divide 48 in the ratio 1:2:1

    Answer: 12, 24 and 12
  5. 5. Statistics

    Find the mean of: 5, 4, 5

    Answer: 4.6666666666667

Thursday 15 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 312 + 512

    Answer: 23
  2. 2. Algebra

    Solve: 6x - 16 = 32

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 182 in the ratio 1:2:4

    Answer: 26, 52 and 104
  5. 5. Statistics

    Calculate the mean of: 11, 33, 13, 19, 19, 41, 9

    Answer: 20.7

Friday 16 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 25 + 47

    Answer: 3435
  2. 2. Algebra

    Solve: 7x - 17 = 81

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 8cm

    Answer: 8.54cm
  4. 4. Ratio

    Divide 156 in the ratio 2:1:3

    Answer: 52, 26 and 78
  5. 5. Statistics

    Calculate the mean of: 46, 22, 36, 28, 40, 18, 7, 50

    Answer: 30.9