OAA Mathematics 3

Question 1

If the pattern is 2, 6, 18, 54, … what is the next number?

Accepted Answer

162

Answer

Each term is multiplied by 3, so 54 × 3 = 162.

Question 2

A triangle has angles measuring 45°, 90°, and x°. What is x?

Accepted Answer

45°

Answer

The angles of a triangle sum to 180°, so x = 180 – 45 – 90 = 45°.

Question 3

What is 15% of 200?

Accepted Answer

30

Answer

15% of 200 = 0.15 × 200 = 30.

Question 4

Solve for n: 4n – 7 = 17

Accepted Answer

n = 6

Answer

4n = 17 + 7 = 24, so n = 24 ÷ 4 = 6.

Question 5

A cylinder has a radius of 3 cm and a height of 10 cm. What is its volume? (Use π ≈ 3.14)

Accepted Answer

282.6 cm³

Answer

V = πr²h = 3.14 × 9 × 10 = 282.6 cm³.

(OAA) Ohio Achievement Assessment Practice Test