NCDAP Mathematical Operations & Problem Solving 2 — Questions and Answers
Question 1: A store sells notebooks for $2.75 each. If a student buys 8 notebooks and pays with a $25 bill, how much change will they receive?
- $3.00 (Correct answer)
- $2.75
- $3.25
- $2.50
Correct answer: $3.00
8 × $2.75 = $22.00, and $25.00 − $22.00 = $3.00 in change.
Question 2: What is the value of 3² + 4²?
- 25 (Correct answer)
- 49
- 14
- 7
Correct answer: 25
3² = 9 and 4² = 16, so 9 + 16 = 25.
Question 3: Simplify: 18 ÷ (3 + 3) × 2
- 6 (Correct answer)
- 3
- 12
- 9
Correct answer: 6
Following order of operations: 18 ÷ 6 × 2 = 3 × 2 = 6.
Question 4: A recipe calls for 2½ cups of flour. If you want to make 1.5 times the recipe, how many cups of flour do you need?
- 3¾ (Correct answer)
- 3½
- 4
- 3¼
Correct answer: 3¾
2.5 × 1.5 = 3.75 = 3¾ cups of flour.
Question 5: Which of the following is equivalent to 0.625?
- 5/8 (Correct answer)
- 3/5
- 5/6
- 7/12
Correct answer: 5/8
0.625 = 625/1000, which simplifies to 5/8.
Question 6: A worker earns $15.50 per hour and works 38 hours in a week. What are their gross earnings for the week?
- $589.00 (Correct answer)
- $579.00
- $599.00
- $569.00
Correct answer: $589.00
15.50 × 38 = $589.00 in gross weekly earnings.
Question 7: What is 15% of 240?
- 36 (Correct answer)
- 24
- 30
- 40
Correct answer: 36
15% of 240 = 0.15 × 240 = 36.
NCDAP Mathematical Operations & Problem Solving 2
A store sells notebooks for $2.75 each.
If a student buys 8 notebooks and pays with a $25 bill, how much change will they receive?