FREE OLNA Numeracy Questions and Answers

Question 1

A nanosecond is one billionth of a second.
Which of the following is a nanosecond?

Accepted Answer

1/1 000 000 000

Answer

1/1 000 000

Answer

1/10 000 000

Answer

1/100 000 000

Question 2

A map has a scale of 1 centimetre representing a distance of 2 kilometres in real life.
What is the appropriate scale for the map?

Accepted Answer

1:200 000

Answer

1:2

Answer

1:2000

Answer

1:20 000

Question 3

Baby John weighed 3100 grams at birth. It is estimated that in the next 12 months, his weight will increase threefold.

What will John’s estimated weight be in 12 months?

Accepted Answer

9.3 kilograms

Answer

3.112 kilograms

Answer

9.1 kilograms

Answer

93 kilograms

Question 4

Joseph wants to buy a pair of runners. He visits five stores and notes the prices on offer for the same style of shoe.
The prices are listed as: $59, $58, $58, $64 and $66.

What is the mean (average) price of the shoes?

Accepted Answer

$61

Answer

$7

Answer

$58

Answer

$59

Question 5

In a jar of 20 marbles, there are orange, purple, and red marbles. A marble is chosen at random from the jar. Eli wants either an orange or a purple marble.

What is the probability of Eli getting what he wants?

Accepted Answer

3/5

Answer

3/20

Answer

7/20

Answer

1/2

Question 6

A car’s petrol tank is three-quarters full. The motorist topped up the tank by adding 12 litres. How many litres does the tank hold when full?

Accepted Answer

48 litres

Answer

24 litres

Answer

36 litres

Answer

60 litres

Question 7

A wheat silo receives grain at a rate of 15 tonnes per minute. How long will it take the silo to receive 120 tonnes of grain?

Accepted Answer

8 minutes

Answer

6 minutes

Answer

12 minutes

Answer

15 minutes

Question 8

A shopping centre car park has 900-car parking bays divided into three sections.
Section 1 has 480 bays, and section 2 has half as much as Section 1.
The remaining bays are in section 3.

How many bays are there in Section 3?

Accepted Answer

180

Answer

80

Answer

120

Answer

280

Question 9

Tina is t years old. Lisa is 6 years older than Tina. Together their ages total 26.

Which equation represents the girls’ age structure?

Accepted Answer

2t + 6 = 26

Answer

2t = 6

Answer

2t – 6 = 26

Answer

t – 6 = 26

Question 10

Vera is building a house. She estimates her main costs to be:
Buying land: $215 000
Planning approval: $4685
Cost of building: $197 500

To the nearest $1000, what is her total cost?

Accepted Answer

$417 000

Answer

$400 000

Answer

$418 000

Answer

$420 000

A nanosecond is one billionth of a second. Which of the following is a nanosecond?

A nanosecond is one billionth of a second.
Which of the following is a nanosecond?