1. Homework Helper Chapter 9 Lesson 9.1 about 6 centimeters
4. 11 centimeters – 3 centimeters = 8 centimeters
about centimeters
When I use a unit cube to measure the length of an object I line up
the left edge of a cube under the left end of the object. I make
marks for the cube lengths along the entire length of the object and
then I count the spaces to find the total length.
Lesson Check/Spiral Review: 6
10:00
4:40 22
0.37; 37

2. Homework Helper Chapter 9 Lesson 9.2 6 centimeters 9 centimeters
Check to make sure children’s drawing is about twice as long as
the length of the string.
Possible answer: I chose exercise #2. Since the pen was 11 cm
long, I knew the eraser had to be less than that. The only estimate
that was less was 4 centimeters, which is why that was the best
choice.
Lesson Check/Spiral Review: 5 35 79 19
0.17; 17

3. Homework Helper Chapter 9 Lesson 9.3 9 centimeters 12 centimeters
Check to make sure children’s drawing is 8 centimeters long.
8 centimeters
Answers for #4 will vary depending upon the actual object measured.
4. Possible answer: My desk is 42 centimeters long. I found the length by
lining up the end of my ruler with the corner of my desk. Then, I marked
where the ruler ended, picked it up and placed it at the end mark. I
kept going until I got to the end of the desk. Finally, I counted how many
many total centimeters I needed for the entire length of my desk.
Lesson Check/Spiral Review: 12
4:05
0.21; 21 2

4. Homework Helper Chapter 9 Lesson 9.4 1. 8 20 20 – 8 =
The straw is 12 centimeters long now
2. I would draw a mark above the number line from 0 to 13 for the first
ribbon. Then, I would draw a second mark for the second ribbon,
starting at 13 and making it 5 more spaces long. The total length for
the two ribbons is 18 centimeters long.
Lesson Check/Spiral Review: 17
472
7:30
0.75; 75

5. Homework Helper Chapter 9 Lesson 9.5
Answers for questions #1 and #2 will depend upon the actual objects measured.
3. Meters are longer than centimeters, so it takes fewer meters than
centimeters, so it takes fewer meters than centimeters to measure
the same length.
I would measure the length of a bench in meters because meters
are longer than centimeters. So, it would take fewer meters than
centimeters to measure the length of a bench.
Lesson Check/Spiral Review: 14
possible answer: 5 dimes and 3 nickels
feet
inches
5. possible answer: 4 quarters

6. Homework Helper Chapter 9 Lesson 9.6
The estimates for #1 and #2 should be reasonable and may vary depending on the actual object.
1. poster
about meters
2. chalkboard
about meters 3.
table
meter stick meter stick meter stick meter stick
Barbara’s meter sticks Luke’s meter sticks
about meters
Possible answer: I thought about the length of one meter and then
I thought about how many meters it would take to match the length
of the object I am estimating.
Lesson Check/Spiral Review: 1 2
2.85
1.15

7. Homework Helper Chapter 9 Lesson 9.7 1. 11 8 11 8 3 3 2. 3 2.
ribbon – 24 centimeters
string – 11 centimeters
24 centimeters – 11 centimeters = 13 centimeters OR
The ribbon is 13 centimeters longer. I subtracted 11 centimeters
from 24 centimeters to get a difference of 13 centimeters.
One string is 7 centimeters longer than the other string because
17 centimeters minus 10 centimeters is a difference of 7 centimeters.
Lesson Check/Spiral Review:
8 centimeters longer
; 75
(check children’s estimates for reasonableness )
:30