Practice the questions of **McGraw Hill Math Grade 8 Answer Key PDF Lesson 13.1 Understanding Variable Expressions **to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 8 Answer Key Lesson 13.1 Understanding Variable Expressions

**Exercises**

**EXPLAIN**

**Write in words what each expression is describing.**

Question 1.

\(\frac{a}{2}\) + 22

Answer:

Dividing a by 2 add 22,

Explanation:

Asked to write the expression \(\frac{a}{2}\) + 22

in words, it is dividing a by 2 then adding 22.

Question 2.

y + 4

Answer:

Adding 4 to y,

Explanation:

Asked to write the expression y + 4 in words,

it is adding 4 to y.

Question 3.

4b + 3

Answer:

Multiplying 4 to b and adding 3,

Explanation:

Asked to write the expression 4b + 3 in words,

it is multiplying 4 to b and adding 3.

Question 4.

.9q – 9

Answer:

Multiplying .9 to q and subtracting 9,

Explanation:

Asked to write the expression .9q – 9 in words,

it is multiplying .9 to q and subtracting 9.

Question 5.

(x – 4) ÷ 20

Answer:

Subtracting 4 from x and dividing by 20,

Explanation:

Asked to write the expression (x – 4) ÷ 20 in words,

it is subtracting 4 from x and dividing by 20.

Question 6.

(3g + 7) – 8 + 33

Answer:

Multiplying 3 to g, adding 7, subtracting 8,

adding 33,

Explanation:

Asked to write the expression (3g + 7) – 8 + 33

in words, it is multiplying 3 to g then

adding 7 then subtracting 8 and adding 33.

Question 7.

3n – 9

Answer:

Multiplying 3 to n and subtracting 9,

Explanation:

Asked to write the expression 3n – 9 in words,

it is multiplying 3 to n and subtracting 9.

Question 8.

\(\frac{5}{h}\)

Answer:

Dividing 5 by h,

Explanation:

Asked to write the expression \(\frac{5}{h}\) in words,

it is dividing 5 by h.