ParaPro Number Sense and Basic Operations 5 — Questions and Answers
Question 1: What is the least common multiple (LCM) of 4 and 6?
- 8
- 10
- 12 (Correct answer)
- 24
Correct answer: 12
The multiples of 4 are 4, 8, 12… and of 6 are 6, 12…, so the LCM is 12.
Question 2: A number is multiplied by 0. What is the result?
- The number itself
- 1
- 0 (Correct answer)
- Undefined
Correct answer: 0
Any number multiplied by 0 equals 0, by the zero property of multiplication.
Question 3: Which of the following is an example of an even number?
- 37
- 41
- 53
- 64 (Correct answer)
Correct answer: 64
64 is even because it is divisible by 2 with no remainder.
Question 4: Estimate the sum of 389 + 214 by rounding each number to the nearest hundred.
- 500
- 600 (Correct answer)
- 700
- 400
Correct answer: 600
389 rounds to 400 and 214 rounds to 200; 400 + 200 = 600.
Question 5: What is the value of the digit 6 in the number 76,432?
- 6
- 600
- 6,000 (Correct answer)
- 60,000
Correct answer: 6,000
The digit 6 is in the thousands place, so its value is 6 × 1,000 = 6,000.
Question 6: A store sells apples in bags of 8. If a teacher needs 56 apples, how many bags must she buy?
- 5
- 6
- 7 (Correct answer)
- 8
Correct answer: 7
56 ÷ 8 = 7, so the teacher needs to buy 7 bags.
Question 7: Which of the following correctly orders these numbers from least to greatest: 0.6, 0.06, 0.66, 0.606?
- 0.06, 0.6, 0.606, 0.66 (Correct answer)
- 0.6, 0.06, 0.606, 0.66
- 0.06, 0.606, 0.6, 0.66
- 0.66, 0.606, 0.6, 0.06
Correct answer: 0.06, 0.6, 0.606, 0.66
Converting to thousandths: 0.060, 0.600, 0.606, 0.660 — ordering from least gives 0.06, 0.6, 0.606, 0.66.
ParaPro Number Sense and Basic Operations 5
What is the least common multiple (LCM) of 4 and 6?