Which of the following numbers is an integer?

Which of the following numbers is an integer?

• A. 3.14
• B. -7
• C. 5.2
• D. 0.5

Answer: (B)

An integer is any whole number, which includes positive numbers, negative numbers, and zero, but excludes fractions and decimals. In this case, -7 qualifies as an integer because it is a whole number without any decimal or fractional component. It can also be represented on the number line, and it has no parts that make it non-integral. The other choices represent numbers that are not whole numbers: 3.14 and 5.2 are decimal numbers with fractional parts, while 0.5 is also a decimal that signifies one-half. This distinction is helpful for understanding the characteristics of integers and identifying them among other number types.

An integer is any whole number, which includes positive numbers, negative numbers, and zero, but excludes fractions and decimals.

In this case, -7 qualifies as an integer because it is a whole number without any decimal or fractional component. It can also be represented on the number line, and it has no parts that make it non-integral.

The other choices represent numbers that are not whole numbers: 3.14 and 5.2 are decimal numbers with fractional parts, while 0.5 is also a decimal that signifies one-half. This distinction is helpful for understanding the characteristics of integers and identifying them among other number types.