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Lintel Jan 1 - 7 25 questions
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Monday 16 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 31 + ? = 183

    Answer: 152
  2. 2. Algebra

    Expand: 7(3x - 9)

    Answer: 21x - 63
  3. 3. Geometry

    Adjacent = 14cm, hypotenuse = 27cm. Find the angle

    Answer: 58.8°
  4. 4. Ratio

    Calculate 19.3% of 449

    Answer: 86.66
  5. 5. Statistics

    Find the range of: 41, -22, 41, -12, 37

    Answer: 63

Tuesday 17 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 150. What are the numbers?

    Answer: 49, 50, and 51
  2. 2. Algebra

    Solve: 9x = 90

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 45°
  4. 4. Ratio

    Calculate 35.5% of 650

    Answer: 230.75
  5. 5. Statistics

    A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 3⁄11

Wednesday 18 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 990 + 531

    Answer: 1521
  2. 2. Algebra

    Solve: 7x = 35

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm

    Answer: 12.53cm
  4. 4. Ratio

    Calculate 37.6% of 428

    Answer: 160.93
  5. 5. Statistics

    Calculate the mean of: 24, 34, 19, 37, 43, 30, 7

    Answer: 27.7

Thursday 19 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 81 + ? = 142

    Answer: 61
  2. 2. Algebra

    Solve: x⁄6 = 1.1666666666667

    Answer: x = 7
  3. 3. Geometry

    Adjacent = 28cm, hypotenuse = 44cm. Find the angle

    Answer: 50.5°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 3 red, 5 blue and 5 green sections. Probability of landing on red?

    Answer: 3⁄13

Friday 20 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 995 + 583

    Answer: 1578
  2. 2. Algebra

    Solve: x⁄7 = 2.1428571428571

    Answer: x = 15
  3. 3. Geometry

    Calculate the area of a circle with diameter 18cm

    Answer: 254.47cm²
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 29, 8, 34, 25, 33, 28

    Answer: 26.2