NAPLAN NAPLAN Numeracy Year 9 Practice 1

Question 1

A rectangular swimming pool is 25 m long and 10 m wide. What is the perimeter of the pool?

Accepted Answer

70 m

Answer

Perimeter = 2 × (length + width) = 2 × (25 + 10) = 2 × 35 = 70 m

Question 2

A store sells a jacket for $180. During a sale, the price is reduced by 25%. What is the sale price?

Accepted Answer

$135

Answer

25% of $180 = $45. Sale price = $180 − $45 = $135

Question 3

The table shows students who chose each sport:
Cricket: 12, Football: 18, Netball: 15, Swimming: 9, Tennis: 6.
What percentage of students chose Football?

Accepted Answer

30%

Answer

Total = 12+18+15+9+6 = 60. Football % = (18 ÷ 60) × 100 = 30%

Question 4

Solve for x: 3x + 7 = 22

Accepted Answer

x = 5

Answer

3x = 22 − 7 = 15, so x = 15 ÷ 3 = 5

Question 5

The mean of five test scores is 72. Four of the scores are 65, 78, 80 and 69. What is the fifth score?

Accepted Answer

68

Answer

Sum of 5 scores = 72 × 5 = 360. Sum of 4 known = 65+78+80+69 = 292. Fifth = 360 − 292 = 68

NAPLAN Practice Test

NAPLAN Practice Test

NAPLAN NAPLAN Numeracy Year 9 Practice 1