Practice questions available in **McGraw Hill Math Grade 6 Answer Key PDF** **Lesson 17.2 Solving Equations by Addition and Subtraction **will engage students and is a great way of informal assessment.

## McGraw-Hill Math Grade 6 Answer Key Lesson 17.2 Solving Equations by Addition and Subtraction

**Exercises
**

**SOLVE**

Question 1.

w + 3 = 10

Answer:

w = 7.

Explanation:

w + 3 = 10

=> w = 10 – 3

=> w = 7.

Question 2.

12 = q + 8

Answer:

q = 4.

Explanation:

12 = q + 8

=> 12 – 8 = q

=> 4 = q.

Question 3.

2 + y = 34

Answer:

y = 32.

Explanation:

2 + y = 34

=> y = 34 – 2

=> y = 32.

Question 4.

7 – e = 4

Answer:

e = 3.

Explanation:

7 – e = 4

=> 7 – 4 = e

=> 3 = e.

Question 5.

s + 17 = 50

Answer:

s = 33.

Explanation:

s + 17 = 50

=> s = 50 – 17

=> s = 33.

Question 6.

d – 4 = 11

Answer:

d = 15.

Explanation:

d – 4 = 11

=> d = 11 + 4

=> d = 15.

Question 7.

z + 10 = 25

Answer:

z = 15.

Explanation:

z + 10 = 25

=> z = 25 – 10

=> z = 15.

Question 8.

23 = 5 + r

Answer:

r = 18.

Explanation:

23 = 5 + r

=> 23 – 5 = r

=>18 = r.

Question 9.

m + 45 = 54

Answer:

m = 9.

Explanation:

m + 45 = 54

=> m = 54 – 45

=> m = 9.

Question 10.

15 + f = 33

Answer:

f = 18.

Explanation:

15 + f = 33

=> f = 33 – 15

=> f = 18.

Question 11.

45 – g = 30

Answer:

g = 15.

Explanation:

45 – g = 30

=> 45 – 30 = g

=> 15 = g.

Question 12.

3 – f = 1

Answer:

f = 2.

Explanation:

3 – f = 1

=> 3 – 1 = f

=> 2 = f.

Question 13.

Chris scored 26 points more than Valerie did in their game of one-on-one basketball. The game ended with a total score of 108. Write an equation that can help you find the number of points Valerie scored.

How many points did Valerie score? ______________

How many points did Chris score? ______________

Answer:

Number of points Chris scored = 67.

Number of points Valerie scored = 41.

Explanation:

Chris scored 26 points more than Valerie did in their game of one-on-one basketball.

Total score game ended = 108.

Let the points scored by Valerie be x.

=> (x + 26) + x = 108.

=> 2x = 108 – 26

=> 2x = 82

=> x = 82 ÷ 2

=> x = 41.

Number of points Chris scored = x + 26

=> 41 + 26

=> 67.