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Bedrock Jan 1 - 7 25 questions
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Monday 20 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: -3 + (-10)

    Answer: -13
  2. 2. Algebra

    Solve: x + 13 = 17

    Answer: x = 4
  3. 3. Geometry

    Opposite = 15cm, hypotenuse = 17.3cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify the ratio 12:16

    Answer: 3:4
  5. 5. Statistics

    Find the mean of: 12, 7, 6, 20

    Answer: 11.25

Tuesday 21 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 30 + 66

    Answer: 30 + 66 = 96
  2. 2. Algebra

    Solve: x + 13 = 16

    Answer: x = 3
  3. 3. Geometry

    Find the area of a circle with radius 6cm

    Answer: 113.cm²
  4. 4. Ratio

    Simplify the ratio 12:28

    Answer: 3:7
  5. 5. Statistics

    Find the mean of: 16, 2, 2, 6

    Answer: 6.5

Wednesday 22 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 20 + 35

    Answer: 20 + 35 = 55
  2. 2. Algebra

    Factorise: 24x + 42

    Answer: 6(4x + 7)
  3. 3. Geometry

    Opposite = 6cm, hypotenuse = 12cm. Find the angle

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

    Simplify the ratio 6:12

    Answer: 1:2
  5. 5. Statistics

    Find the mean of: 6, 15, 16, 11

    Answer: 12

Thursday 23 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 79 + 19

    Answer: 89
  2. 2. Algebra

    Find the next term: 30, 39, 48, 57, ...

    Answer: 66
  3. 3. Geometry

    Opposite = 10cm, hypotenuse = 11.5cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    In ratio 4:3, the difference between shares is 29. What are the shares?

    Answer: 116 and 87
  5. 5. Statistics

    What is the probability of rolling a 2 on a fair die?

    Answer: 16

Friday 24 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 72 + 93

    Answer: 72 + 93 = 165
  2. 2. Algebra

    Find the next term: 19, 26, 33, 40, ...

    Answer: 47
  3. 3. Geometry

    Find the area of a right triangle with base 5cm and height 5cm

    Answer: 12.5cm²
  4. 4. Ratio

    Calculate 25% of 145

    Answer: 36.25
  5. 5. Statistics

    What is the probability of rolling a 6 on a fair die?

    Answer: 16