NCDAP Arithmetic 3 — Questions and Answers
Question 1: What is 15% of 240?
- 32
- 36 (Correct answer)
- 38
- 42
Correct answer: 36
0.15 × 240 = 36.
Question 2: Order from least to greatest: 0.6, 2/3, 5/8, 0.65
- 5/8, 0.6, 0.65, 2/3
- 0.6, 0.65, 5/8, 2/3
- 0.6, 5/8, 0.65, 2/3 (Correct answer)
- 2/3, 0.65, 5/8, 0.6
Correct answer: 0.6, 5/8, 0.65, 2/3
Converting: 0.6, 0.625, 0.65, 0.667 — so the order is 0.6, 5/8, 0.65, 2/3.
Question 3: A jacket originally costs $85. It is on sale for 20% off. What is the sale price?
- $65.00
- $68.00 (Correct answer)
- $72.00
- $60.00
Correct answer: $68.00
20% of $85 = $17; $85 − $17 = $68.
Question 4: What is the value of 2³ × 3²?
- 54
- 72 (Correct answer)
- 36
- 48
Correct answer: 72
2³ = 8 and 3² = 9; 8 × 9 = 72.
Question 5: A recipe calls for 2¼ cups of flour. If you want to make 1.5 times the recipe, how much flour do you need?
- 3 cups
- 3¼ cups
- 3⅜ cups (Correct answer)
- 3½ cups
Correct answer: 3⅜ cups
2.25 × 1.5 = 3.375 = 3⅜ cups.
Question 6: What is the greatest common factor (GCF) of 36 and 48?
- 6
- 9
- 12 (Correct answer)
- 18
Correct answer: 12
The factors of 36 include 12, and 12 also divides 48, making it the GCF.
Question 7: A number is increased by 40% and the result is 98. What was the original number?
- 58.8
- 70 (Correct answer)
- 72
- 65
Correct answer: 70
Let n × 1.4 = 98; n = 98 ÷ 1.4 = 70.
