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Bedrock Jan 29 - Feb 4 25 questions
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Monday 26 January 2026

Keystones #26 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5.2 + 5.5

    Answer: 5.2 + 5.5 = 10.7
  2. 2. Algebra

    Factorise: 12x + 8

    Answer: 4(3x + 2)
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Simplify the ratio 9:21

    Answer: 3:7
  5. 5. Statistics

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

    Answer: 1⁄6

Tuesday 27 January 2026

Keystones #27 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Find the next term: 7, 10, 13, 16, ...

    Answer: 19
  3. 3. Geometry

    Opposite = 9cm, hypotenuse = 10.4cm. Find the angle

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

    In ratio 7:2, the difference between shares is 55. What are the shares?

    Answer: 77 and 22
  5. 5. Statistics

    Find the mean of: 19, 17, 18

    Answer: 18

Wednesday 28 January 2026

Keystones #28 · Five questions · Open this day only

  1. 1. Number

    Calculate: 53 + 52

    Answer: 53 + 52 = 105
  2. 2. Algebra

    Simplify: 5x + 7x

    Answer: 12x
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Simplify the ratio 12:20

    Answer: 3:5
  5. 5. Statistics

    Find the mean of: 18, 6, 2, 2, 20

    Answer: 9.6

Thursday 29 January 2026

Keystones #29 · Five questions · Open this day only

  1. 1. Number

    Calculate: 39 + 36

    Answer: 39 + 36 = 75
  2. 2. Algebra

    Factorise: 10x + 14

    Answer: 2(5x + 7)
  3. 3. Geometry

    Find the area of a right triangle with base 9cm and height 4cm

    Answer: 18cm²
  4. 4. Ratio

    Simplify the ratio 10:25

    Answer: 2:5
  5. 5. Statistics

    Find the mean of: 20, 10, 11

    Answer: 13.666666666667

Friday 30 January 2026

Keystones #30 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1.4 + 6.4

    Answer: 1.4 + 6.4 = 7.8
  2. 2. Algebra

    Simplify: 7x + 3x

    Answer: 10x
  3. 3. Geometry

    Find the area of a circle with radius 6cm

    Answer: 113.cm²
  4. 4. Ratio

    In ratio 3:2, the difference between shares is 30. What are the shares?

    Answer: 90 and 60
  5. 5. Statistics

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

    Answer: 1⁄6