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Cornerstone Jan 1 - 7 25 questions
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Monday 9 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 18 + 34

    Answer: 78
  2. 2. Algebra

    Expand: 2(5x + 7)

    Answer: 10x + 14
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 16cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Find 41% of 78

    Answer: 31.98
  5. 5. Statistics

    Find the mean of: 3, 17, 16, 10, 19

    Answer: 13

Tuesday 10 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 435 + 966

    Answer: 435 + 966 = 1401
  2. 2. Algebra

    Factorise: 6x² + 4x

    Answer: 2x(3x + 2)
  3. 3. Geometry

    Opposite = 13cm, adjacent = 8cm. Calculate the angle

    Answer: 58.4°
  4. 4. Ratio

    Simplify: 4:6:10

    Answer: 2:3:5
  5. 5. Statistics

    Find the mean of: 10, 3, 13

    Answer: 8.6666666666667

Wednesday 11 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 91 + 96

    Answer: 91 + 96 = 187
  2. 2. Algebra

    Factorise: 20x + 28

    Answer: 4(5x + 7)
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 11.3cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Simplify: 20:12:12

    Answer: 5:3:3
  5. 5. Statistics

    Calculate the mean of: 34, 47, 44, 16, 42, 7, 24, 7

    Answer: 27.6

Thursday 12 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 34 + 15

    Answer: 1920
  2. 2. Algebra

    Factorise: 18x + 15

    Answer: 3(6x + 5)
  3. 3. Geometry

    Calculate the area of a circle with diameter 22cm

    Answer: 380.13cm²
  4. 4. Ratio

    Find 80% of 387

    Answer: 309.6
  5. 5. Statistics

    Calculate the range of: 61, 97, 102, 65, 50, 104

    Answer: 54

Friday 13 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 63 + 85

    Answer: 63 + 85 = 148
  2. 2. Algebra

    Factorise: 2x² + 7x

    Answer: x(2x + 7)
  3. 3. Geometry

    Opposite = 15cm, hypotenuse = 21.2cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Simplify: 12:6:4

    Answer: 6:3:2
  5. 5. Statistics

    Find the mean of: 3, 12, 4, 16

    Answer: 8.75