Answer Key
CHAPTER 7 Measurement
Lesson 3

On The Road to Learning (pages 275 to 277)
A.
1. 6.4 m + 6.1 m + 3.2 m = 15.7 m
2. 6 m + 2 (5.1) + 3 = 19.2 m
3. 2(36 m) + 2 (16 m) = 104 m
4. 2(4 m) + 3(3 m) = 17 cm
5. 8 m + 7 m + 3 m + 5 m + 5 m + 2 m = 30 m

B.
1. 36 m
2. 100 cm
3. 28.5 m
4. 32.4 m
5. 43

C.
1. 360 m
2. 4.5 m
3. 37 m
4. 270 m
5. 180 m

Creating My Math Word Corner (page 279)
Sample answers: perimeter, triangle, square/rhombus, rectangle, parallelogram

Showing What I Have Learned (pages 279 and 281)
Accomplishing the Standard
A.
1. d
2. b
3. e
4. f
5. c
105
B.

1. 2(15 + 6) = 42 m
2. 8 x 8 x 8 = 24 m
3. 12 + 10 + 18 + 22 = 62 m
4. 6.5 + 6.5 + 8.5 + 8.5 + 11 = 41 m
5. 9 + 11.5 + 3.5 + 6.5 + 5.5 + 5 = 41 m

C.
1. 96 m
2. 38.4 m
3. 37.5 m
4. 38.5 m
5. 30 m
6. 150 m
7. 78.67 m
8. 112 m

Extending Beyond the Standard
1. 120 m
2. 58 m
3. 32 m
4. 74 m
5. Square

Understanding How I Learned (page 281)
Answers will vary. Possible answers:
1. I learned a lot.
2. It was just about adding all the sides of a polygon
3. I need to practice more.

Chapter 7