year9numeracycalculator

Question 1

A triangle has an area of 150 square centimetres. The length of the base of the triangle is 24 cm. The height of the triangle is

A. 6.25 cm

B. 12.50 cm

C. 18.75 cm

D. 25.00 cm

Answer

Question 2

Since beginning Year 7 two years ago a student’s bus fare has increased by 150%. If the fare was 50c in Year 7 the fare now, to the nearest five cents, is

A. 60c

B. 75c

C. 90c

D. $1.25

Answer to this question is supplied on the NAPLAN CD-ROM

Question 3

If $1000 is put in a bank account earning 10% per annum interest, then the account is worth

1000 x 1.1 dollars at the end of the first year,

1000 x 1.1 x 1.1 dollars at the end of the second year,

1000 x 1.1 x 1.1 x 1.1 dollars at the end of the third year.

How long would it be before the account is worth $2000?

A. less than 6 years

B. between 6 and 7 years

C. between 7 and 8 years

D. between 8 and 9 years

Answer to this question is supplied on the NAPLAN CD-ROM