# McGraw Hill Math Grade 7 Lesson 17.1 Answer Key Understanding Variable Expressions

## McGraw-Hill Math Grade 7 Answer Key Lesson 17.1 Understanding Variable Expressions

Exercises

EXPLAIN

Put into words what each expression is describing.

Question 1.
$$\frac{a}{4}$$
The given expression $$\frac{a}{4}$$ describes a number is divided by four.

Question 2.
y + 3
The given expression y + 3 describes a number plus three.

Question 3.
4b + 8
The given expression 4b + 8 describes four times a number plus eight.

Question 4.
.9q – 7
The given expression .9q – 7 describes nine tenths of a number minus seven.

Question 5.
$$\frac{(x-3)}{25}$$
The given expression $$\frac{(x-3)}{25}$$ describes a number minus three, then divided by twenty-five.

Question 6.
8(2g + 6)
The given expression 8(2g + 6) describes eight times the sum of two times a number plus six.

Question 7.
2n – 5
The given expression 2n – 5 describes two times a number minus five.

Question 8.
12(r – 14)
$$\frac{7}{h}$$
The given expression $$\frac{7}{h}$$ describes seven is divided by a number.
$$\frac{11+b}{16}$$
The given expression $$\frac{11+b}{16}$$ describes the sum of eleven plus a number, then divided by sixteen.