classify each number below as an integer or not.

Explanation:

Step1: Recall integer definition

Integers are whole - numbers and their opposites, no fractions or decimals.

Step2: Analyze $\frac{7}{20}$

Since it's a fraction, it's not an integer, so No.

Step3: Analyze - 65

It's a negative whole - number, so Yes.

Step4: Analyze $\frac{42}{7}$

$\frac{42}{7}=6$, which is a whole number, so Yes.

Step5: Analyze 54.57

It's a decimal, so No.

Step6: Analyze $-\frac{10}{2}$

$-\frac{10}{2}=-5$, which is a whole number, so Yes.

Answer:

$\frac{7}{20}$: No -65: Yes $\frac{42}{7}$: Yes 54.57: No $-\frac{10}{2}$: Yes