NAPLAN NAPLAN Numeracy Year 9 Practice 2

Question 1

A bag contains 5 red marbles, 3 blue marbles and 2 green marbles. If one marble is chosen at random, what is the probability of choosing a red marble?

Accepted Answer

1/2

Answer

1/5

Answer

3/10

Answer

2/5

Question 2

A sequence of figures is made with matchsticks: Figure 1 uses 4, Figure 2 uses 7, Figure 3 uses 10. How many matchsticks are needed for Figure 8?

Accepted Answer

25

Answer

22

Answer

28

Answer

31

Question 3

A car travels 360 km using 45 litres of petrol. What is the car's fuel efficiency in kilometres per litre?

Accepted Answer

8 km/L

Answer

6 km/L

Answer

7 km/L

Answer

9 km/L

Question 4

A stem-and-leaf plot shows quiz scores:
Stem 5: leaves 2 4 7
Stem 6: leaves 1 3 3 8
Stem 7: leaves 0 5 9
Stem 8: leaves 2 6
What is the median score?

Accepted Answer

65

Answer

63

Answer

68

Answer

70

Question 5

A rectangular block of wood measures 8 cm × 5 cm × 3 cm. What is its total surface area?

Accepted Answer

158 cm²

Answer

79 cm²

Answer

120 cm²

Answer

240 cm²

Question 6

In a class of 30 students, the ratio of boys to girls is 2 : 3. How many girls are in the class?

Accepted Answer

18

Answer

10

Answer

12

Answer

15

Question 7

A straight angle is divided into three parts. Two of the angles are 47° and 65°. What is the third angle?

Accepted Answer

68°

Answer

58°

Answer

78°

Answer

88°