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Lintel Jan 1 - 7 25 questions
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Monday 16 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 82 + ? = 139

    Answer: 57
  2. 2. Algebra

    Solve: 8x = 32

    Answer: x = 4
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 22cm. Find the angle

    Answer: 56.9°
  4. 4. Ratio

    Simplify: 8:16:20

    Answer: 2:4:5
  5. 5. Statistics

    Calculate the mean of: 40, 35, 16, 9, 8, 29, 15

    Answer: 21.7

Tuesday 17 August 2021

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

    Solve: x5 = 5.8

    Answer: x = 29
  3. 3. Geometry

    Opposite = 11cm, adjacent = 12cm. Calculate the angle

    Answer: 42.5°
  4. 4. Ratio

    Simplify: 9:6:12

    Answer: 3:2:4
  5. 5. Statistics

    A spinner has 6 red, 4 blue and 3 green sections. Probability of landing on red?

    Answer: 613

Wednesday 18 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 998 + 508

    Answer: 1506
  2. 2. Algebra

    Solve: x2 = 19

    Answer: x = 38
  3. 3. Geometry

    Opposite = 9cm, adjacent = 20cm. Calculate the angle

    Answer: 24.2°
  4. 4. Ratio

    Find 22% of 243

    Answer: 53.46
  5. 5. Statistics

    Find the range of: 34, -16, 35, 3, 10

    Answer: 51

Thursday 19 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 7√3 - 3√3

    Answer: 4√3
  2. 2. Algebra

    Solve: 4x = 24

    Answer: x = 6
  3. 3. Geometry

    Adjacent = 27cm, hypotenuse = 37cm. Find the angle

    Answer: 43.1°
  4. 4. Ratio

    Simplify: 18:9:15

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

    A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 25

Friday 20 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 120. What are the numbers?

    Answer: 39, 40, and 41
  2. 2. Algebra

    Solve: 4x = 32

    Answer: x = 8
  3. 3. Geometry

    Opposite = 18cm, adjacent = 13cm. Calculate the angle

    Answer: 54.2°
  4. 4. Ratio

    Simplify: 18:18:6

    Answer: 3:3:1
  5. 5. Statistics

    Find the range of: -16, 14, 16, 44, -16

    Answer: 60