Number Sense and Basic Operations Flashcards

A student says that 0.5 is greater than 0.50. Is the student correct?

Answer: No, 0.5 and 0.50 are equal in value

Trailing zeros after a decimal point do not change the value, so 0.5 = 0.50.

Which of the following represents the number 4,207 in expanded form?

Answer: 4,000 + 200 + 7

4,207 = 4,000 + 200 + 7, reflecting the thousands, hundreds, tens, and ones places.

What is the remainder when 58 is divided by 7?

Answer: 4

7 × 8 = 56, and 58 − 56 = 2, so the remainder is 2.

A classroom has 144 crayons to be shared equally among 12 students. How many crayons does each student get?

Answer: 12

144 ÷ 12 = 12 crayons per student.

Which number is a composite number?

Answer: 15

15 is composite because it has factors other than 1 and itself (3 × 5 = 15).

Round 3,846 to the nearest hundred.

Answer: 3,800

The tens digit is 4 (less than 5), so 3,846 rounds down to 3,800.

Which expression shows the commutative property of addition?

Answer: 2 + 3 = 3 + 2

The commutative property states that changing the order of addends does not change the sum: a + b = b + a.