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Lintel Jan 1 - 7 25 questions
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Monday 21 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 111. What are the numbers?

    Answer: 36, 37, and 38
  2. 2. Algebra

    Solve: 4x = 28

    Answer: x = 7
  3. 3. Geometry

    Adjacent = 26cm, hypotenuse = 41cm. Find the angle

    Answer: 50.6°
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 31, 21, 39, 33, 10, 15, 23, 39

    Answer: 26.4

Tuesday 22 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 361 + 195

    Answer: 361 + 195 = 556
  2. 2. Algebra

    Solve: 3x = 33

    Answer: x = 11
  3. 3. Geometry

    Calculate the area of a circle with diameter 9cm

    Answer: 63.62cm²
  4. 4. Ratio

    Calculate 33.8% of 788

    Answer: 266.34
  5. 5. Statistics

    Calculate the mean of: 46, 20, 16, 6, 32, 13, 23

    Answer: 22.3

Wednesday 23 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 12 + 12 + 24

    Answer: 32
  2. 2. Algebra

    Factorise fully: 21x² + 9x

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

    Find the distance between (-1, 0) and (6, 4)

    Answer: 8.06
  4. 4. Ratio

    Calculate 37.7% of 635

    Answer: 239.4
  5. 5. Statistics

    A spinner has 2 red, 3 blue and 3 green sections. Probability of landing on red?

    Answer: 14

Thursday 24 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 126. What are the numbers?

    Answer: 41, 42, and 43
  2. 2. Algebra

    Solve: x4 = 4

    Answer: x = 16
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 28cm. Find the angle

    Answer: 55.2°
  4. 4. Ratio

    Simplify: 12:10:12

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

    Calculate the mean of: 9, 18, 19, 37, 23, 46, 38

    Answer: 27.1

Friday 25 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    63000000

    Answer: 6.3 × 107
  2. 2. Algebra

    Solve: 3x = 18

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 13cm

    Answer: 17.03cm
  4. 4. Ratio

    Find 30% of 134

    Answer: 40.2
  5. 5. Statistics

    A spinner has 6 red, 6 blue and 2 green sections. Probability of landing on red?

    Answer: 37