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Lintel Jan 1 - 7 25 questions
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Monday 22 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 53 + ? = 194

    Answer: 141
  2. 2. Algebra

    Solve: x⁄3 = 10.666666666667

    Answer: x = 32
  3. 3. Geometry

    Find c if a = 8cm and b = 19cm in a right triangle

    Answer: 20.6cm
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 3 red, 3 blue and 6 green sections. Probability of landing on red?

    Answer: 1⁄4

Tuesday 23 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 114. What are the numbers?

    Answer: 37, 38, and 39
  2. 2. Algebra

    Factorise: 9x² + 9x

    Answer: 9x(x + 1)
  3. 3. Geometry

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

    Answer: 54.5°
  4. 4. Ratio

    Calculate 49.6% of 612

    Answer: 303.55
  5. 5. Statistics

    Calculate the mean of: 33, 11, 35, 29, 28, 9

    Answer: 24.2

Wednesday 24 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 123. What are the numbers?

    Answer: 40, 41, and 42
  2. 2. Algebra

    Solve: 5x = 75

    Answer: x = 15
  3. 3. Geometry

    Calculate the area of a circle with diameter 18cm

    Answer: 254.47cm²
  4. 4. Ratio

    Simplify: 12:10:10

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

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

    Answer: 5⁄17

Thursday 25 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 191, 206, and 70

    Answer: 467
  2. 2. Algebra

    Solve: x⁄8 = 1.5

    Answer: x = 12
  3. 3. Geometry

    Find c if a = 16cm and b = 20cm in a right triangle

    Answer: 25.6cm
  4. 4. Ratio

    Simplify: 12:8:8

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

    Calculate the mean of: 19, 41, 32, 21, 35, 40, 30

    Answer: 31.1

Friday 26 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the missing number: 3.63 + □ = 13.27

    Answer: □ = 9.64
  2. 2. Algebra

    Solve: x⁄3 = 5.3333333333333

    Answer: x = 16
  3. 3. Geometry

    Calculate the distance between (8, 8) and (11, 12)

    Answer: 5
  4. 4. Ratio

    Simplify: 16:20:16

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

    Calculate the mean of: 29, 13, 20, 17, 26, 7

    Answer: 18.7