ALEKS Arithmetic and Number Sense 2 — Questions and Answers
Question 1: Which number is a prime number?
- 37 (Correct answer)
- 39
- 51
- 49
Correct answer: 37
37 is prime because it has no divisors other than 1 and itself.
Question 2: What is 4³ (4 to the third power)?
- 64 (Correct answer)
- 12
- 16
- 48
Correct answer: 64
4³ = 4 × 4 × 4 = 64.
Question 3: Order these from least to greatest: 0.6, 3/5, 0.59, 5/8
- 0.59, 0.6, 3/5, 5/8 (Correct answer)
- 3/5, 0.6, 0.59, 5/8
- 5/8, 3/5, 0.6, 0.59
- 0.6, 0.59, 3/5, 5/8
Correct answer: 0.59, 0.6, 3/5, 5/8
Converting all to decimals: 0.59, 0.60, 0.60, 0.625 — so the order is 0.59, 0.6, 3/5, 5/8.
Question 4: What is the greatest common factor (GCF) of 36 and 48?
- 12 (Correct answer)
- 6
- 4
- 24
Correct answer: 12
The GCF of 36 and 48 is 12 because 12 is the largest number that divides both evenly.
Question 5: A recipe calls for 2/3 cup of sugar. If you triple the recipe, how much sugar do you need?
- 2 cups (Correct answer)
- 1 1/3 cups
- 2 1/3 cups
- 1 2/3 cups
Correct answer: 2 cups
Triple 2/3: 3 × 2/3 = 6/3 = 2 cups.
Question 6: What is 5.6 × 10²?
- 560 (Correct answer)
- 56
- 5600
- 0.056
Correct answer: 560
5.6 × 10² = 5.6 × 100 = 560.
ALEKS Arithmetic and Number Sense 2
Which number is a prime number?