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.