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Lintel Jan 1 - 7 25 questions
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Monday 14 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 54 + ? = 112

    Answer: 58
  2. 2. Algebra

    Expand: 3(8x - 11)

    Answer: 24x - 33
  3. 3. Geometry

    Find c if a = 18cm and b = 18cm in a right triangle

    Answer: 25.5cm
  4. 4. Ratio

    Find 80% of 230

    Answer: 184
  5. 5. Statistics

    A spinner has 5 red, 4 blue and 2 green sections. Probability of landing on red?

    Answer: 511

Tuesday 15 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 93. What are the numbers?

    Answer: 30, 31, and 32
  2. 2. Algebra

    Collect like terms: 4x + 8y + 6x + 5y

    Answer: 10x + 13y
  3. 3. Geometry

    Opposite = 18cm, adjacent = 16cm. Calculate the angle

    Answer: 48.4°
  4. 4. Ratio

    Simplify: 15:9:18

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

    Calculate the mean of: 9, 16, 20, 12, 44, 46

    Answer: 24.5

Wednesday 16 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 816 + 932

    Answer: 816 + 932 = 1748
  2. 2. Algebra

    Solve: 3x = 27

    Answer: x = 9
  3. 3. Geometry

    A circle has area 530.9cm². Find its radius (dp)

    Answer: 13cm
  4. 4. Ratio

    Find 38% of 332

    Answer: 126.16
  5. 5. Statistics

    Calculate the mean of: 29, 33, 26, 15, 44, 43, 11, 28

    Answer: 28.6

Thursday 17 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 992 + 856

    Answer: 1848
  2. 2. Algebra

    Factorise fully: 6x² + 15x

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

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

    Answer: 31.6°
  4. 4. Ratio

    Simplify: 16:20:12

    Answer: 4:5:3
  5. 5. Statistics

    A spinner has 5 red, 4 blue and 6 green sections. Probability of landing on red?

    Answer: 13

Friday 18 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 117. What are the numbers?

    Answer: 38, 39, and 40
  2. 2. Algebra

    Solve: x8 = 2.375

    Answer: x = 19
  3. 3. Geometry

    Opposite = 14cm, adjacent = 10cm. Calculate the angle

    Answer: 54.5°
  4. 4. Ratio

    Simplify: 24:16:20

    Answer: 6:4:5
  5. 5. Statistics

    Find the range of: 23, 13, -14, 9, -9

    Answer: 37