OAR OAR Math Skills 4 β Questions and Answers
Question 1: A circular pizza has a diameter of 12 inches. What is its area? (Use Ο β 3.14)
- 37.68 sq in
- 113.04 sq in (Correct answer)
- 452.16 sq in
- 144 sq in
Correct answer: 113.04 sq in
Radius = 6; area = Ο Γ 6Β² = 3.14 Γ 36 = 113.04 sq in.
Question 2: Solve for y: 4y + 12 = 36
- 4
- 5
- 6 (Correct answer)
- 7
Correct answer: 6
4y = 36 β 12 = 24; y = 24 / 4 = 6.
Question 3: A worker earns $15 per hour and gets a 10% raise. What is the new hourly wage?
- $15.50
- $16.00
- $16.50 (Correct answer)
- $17.00
Correct answer: $16.50
Raise = 10% of $15 = $1.50; new wage = $15 + $1.50 = $16.50.
Question 4: What is the greatest common factor (GCF) of 48 and 36?
- 6
- 9
- 12 (Correct answer)
- 18
Correct answer: 12
Factors of 48: 1,2,3,4,6,8,12,16,24,48; factors of 36 include 12; GCF = 12.
Question 5: A sequence follows the rule: multiply by 3 each time. If the first term is 2, what is the 5th term?
- 54
- 162 (Correct answer)
- 81
- 486
Correct answer: 162
2 β 6 β 18 β 54 β 162; the 5th term is 162.
Question 6: Convert 0.035 to a percent.
- 0.35%
- 3.5% (Correct answer)
- 35%
- 350%
Correct answer: 3.5%
Multiply by 100: 0.035 Γ 100 = 3.5%.
Question 7: If a rectangle's length is doubled and width is halved, how does its area change?
- It doubles
- It halves
- It stays the same (Correct answer)
- It quadruples
Correct answer: It stays the same
New area = (2L)(W/2) = LW = original area; it stays the same.
OAR OAR Math Skills 4
A circular pizza has a diameter of 12 inches.
What is its area? (Use Ο β 3.14)