Refer to our Texas Go Math Grade 4 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 4 Lesson 15.6 Answer Key Metric Units of Length.

## Texas Go Math Grade 4 Lesson 15.6 Answer Key Metric Units of Length

**Essential Question**

How can you convert metric units of length?

Answer: To convert a smaller unit to a larger unit (eg to ), divide it by the number of smaller units which are needed to make. To convert from a larger unit to a smaller one, multiply. To convert from a smaller unit to a larger one, divide.

**Investigate**

Materials

- ruler (meter)
- scissors
- tape

Meters (in), decimeters (dm), centimeters (cm), and millimeters (mm) aie all metric units of length.

**Build a meterstick to show how these units are related.**

A. Cut out the meterstick strips.

Answer:

1 meter = 10 decimeter

B. Place the strips end-to-end to build 1 meter. Tape the strips together.

Answer:

10 decimeter strips to make 1 meter.

C. Look at your meter strip. What patterns do you notice about the sizes of the units?

1 meter is ________ times as long as 1 decimeter.

1 decimeter is ________ times as long as 1 centimeter.

1 centimeter is ________ times as long as 1 millimeter.

Answer:

1 meter is 10 times as long as 1 decimeter.

1 decimeter is 10 times as long as 1 centimeter.

1 centimeter is 10 times as long as 1 millimeter.

Describe the pattern you see.

Answer:

Each is multiplied with 10

**Math Idea:** If you lined up 1,000 metersticks end-to-end, the length of the metersticks would be 1 kilometer.

**H.O.T.** Apply What operation could you use to find how many centimeters are in 3 meters? Explain.

Answer:

1 meter = 100 centimeters

3 x100 = 300

Multiplication operation is used.

**Make Connections**

You can use different metric units to describe the same metric length. For example, you can measure the length of a book as 3 decimeters or as 30 centimeters. Since the metric system is based on the number 10, decimals or fractions can be used to describe metric lengths as equivalent units.

Think of 1 meter as one whole. Use your meterstick to write equivalent units as fractions and decimals.

1 meter = 10 decimeters

Each decimeter is

___________ or ___________ of a meter.

Answer: Each decimeter is

0.1 or 1⁄10 of a meter.

1 meter = 100 centimeters

Each centimeter is

___________ or ___________ of a meter.

Answer:

Each centimeter is

0.01 or 1⁄100 of a meter.

**Complete the sentence.**

A length of 51 centimeters is ___________ or ___________ of a meter.

A length of 8 decimeters is ___________ or ___________ of a meter.

A length of 82 centimeters is ___________ or ___________ of a meter.

Answer:

A length of 51 centimeters is 0.51 or 51⁄100 of a meter.

A length of 8 decimeters is 0.8 or 8⁄10 of a meter.

A length of 82 centimeters is 0.82 or 82⁄100 of a meter.

**Math Talk**

Mathematical Processes

Explain how you are able to locate and write decimeters and centimeters as parts of a meter on the meterstick.

Answer:

1 meter is 10 times as long as 1 decimeter.

1 decimeter is 10 times as long as 1 centimeter.

1 centimeter is 10 times as long as 1 millimeter.

By identifying the lengths.

We are able to locate and write decimeters and centimeters as parts of a meter on the meterstick

**Share and Show**

**Complete.**

Question 1.

2 meters = _________ centimeters

Answer: 200

Explanation:

1 meter = 100 centimeters

2 meters = 2 x 100 centimeters = 200 centimeters

Question 2.

3 centimeters = _________ millimeters

Answer: 30

Explanation:

1 centimeter = 10 millimeters

3 centimeters = 3 x 10 millimeters= 30 millimeters

Question 3.

5 decimeters = _________ centimeters

Answer: 50

Explanation:

1 decimeters = 10 centimeters

5 decimeters = 5 x 10 centimeters= 50 centimeters

**Describe the length in meters. Write your answer as a fraction and as a decimal.**

Question 4.

65 centimeters = _________ or _________ meter

Answer: 0.65 or 1⁄65 meter

Explanation:

1 meter = 100 centimeters

1 centimeter = 1⁄100 meter

65 centimeters = 65⁄100 meter= 0.65 meter

Question 5.

47 centimeters = _________ or _________ meter

Answer: 0.47 or 47⁄100 meter

Explanation:

1 meter = 100 centimeters

1 centimeter = 1⁄100 meter

47 centimeters = 47⁄100 meter= 0.47 meter

Question 6.

9 decimeters = _________ or _________ meter

Answer: 0.9 or 9⁄10 meter

Explanation:

1 meter = 10 decimeters

1 decimeter= 1⁄10 meter

9 decimeters = 9⁄10 meter= 0.9 meter

Question 7.

2 decimeters = _________ or _________ meter

Answer:0.9 or 2⁄10 meter

Explanation:

1 meter = 10 decimeters

1 decimeter= 1⁄10 meter

2 decimeters = 2⁄10 meter= 0.2 meter

**Problem Solving**

Question 8.

**H.O.T.** What’s the Error? Julianne’s desk is 75 centimeters long. She says her desk is 7.5 meters long. Describe her error.

Answer: its not 7.5 meter long. it is 0.75 meter long.

Explanation:

1 meter = 100 centimeters

1 centimeter = 1⁄100 meter

75 centimeters = 75⁄100 meter= 0.75 meter

Question 9.

**H.O.T.** **Communicate Multi-Step** Alexis is knitting a blanket 2 meters long. Every 2 decimeters, she changes the color of the yarn to make stripes. How many stripes will the blanket have? Explain.

Answer: 10 stripes

Explanation:

1 meter = 10 decimeters

1 decimeter= 1⁄10 meter

2 decimeters = 2⁄10 meter

So Every 2⁄10 meter, she changes the color of the yarn to make stripes. So 5 stripes will come in meter blanket.

For 2 meters , 2 x 5 = 10 stripes

**H.O.T. Pose a Problem**

Question 10.

**Multi-Step** Aruna was writing a report on pecan trees. She made the table of information to the right.

Write a problem that can be solved by using the data.

Answer:

Describe how you could change the problem by changing a unit in the problem. Then solve the problem.

Answer:

If I change 30 as 25

the length will be changed

25 x 100 = 2500 centimeters

**Daily Assessment Task**

**Fill in the bubble completely to show your answer.**

Question 11.

A length of 1 millimeter is what part of a centimeter?

(A) \(\frac{1}{10}\)

(B) \(\frac{1}{1,000}\)

(C) \(\frac{1}{100}\)

(D) \(\frac{1}{10,000}\)

Answer: A

Explanation:

1 centimeter = 10 millimeters

1 millimeter = 1⁄10 centimeter

Question 12.

Halle buys a spool of thread containing 40 meters of thread. How many decimeters of thread are on the spool?

(A) 4,000 decimeters

(B) 4 decimeters

(C) 40,000 decimeters

(D) 400 decimeters

Answer: D

Explanation:

1 meter = 10 decimeters

40 meters = 40 x 10 decimeters = 400 decimeters

Question 13.

**Multi-Step** Mia plants flowers in a row along the border of her garden. The border is 4 meters long. She plants a flower at one end of the border and then another flower every 10 centimeters. How many flowers does Mia plant?

(A) 9

(B) 41

(C) 4

(D) 40

Answer: D

Explanation:

1 meter = 100 centimeters

4 meter = 400 centimeters

1 centimeter = 1⁄100 meter

10 centimeter = 1⁄10 meter

So she will plan10 for each meter. So 4 x 10 = 40

**TEXAS Test Prep**

Question 14.

Lucille runs the 50-meter dash in her track meet. How many millimeters long is the race?

(A) 500 millimeters

(B) 50,000 millimeters

(C) 5,000 millimeters

(D) 500,000 millimeters

Answer: B

Explanation:

1 meter = 1000 millimeters

50-meter = 50 x 1000= 50,000 millimeters

### Texas Go Math Grade 4 Lesson 15.6 Homework and Practice Answer Key

**Complete.**

Question 1.

3 meters = ____________ centimeters

Answer: 300

Explanation

1 meter = 100 centimeters

3 meters = 3 x 100 centimeters= 300 centimeters

Question 2.

4 centimeters = ____________ millimeters

Answer: 40

Explanation:

1 centimeters = 10 millimeters

4 centimeters = 40 millimeters

Question 3.

2 decimeters = ____________ centimeters

Answer: 20 centimeters

Explanation:

1 decimeter = 10 centimeters

2 decimeters = 2 x 10 =20 centimeters

Question 4.

5 meters = ____________ decimeters

Answer: 50

Explanation:

1 meter = 10 decimeters

5 meters = 5 x 10 = 50 decimeters

Question 5.

600 centimeters = ____________ meters

Answer: 6

Explanation

1 meter = 100 centimeters

600 centimeters= 600⁄100 meters= 6 meters

**Describe the length in meters. Write your answer as a fraction and as a decimal.**

Question 6.

38 centimeters = ____________ or ____________meters

Answer: 0.38 or 38⁄100 meters

Explanation:

1 meter = 100 centimeters

38 centimeters = 0.38 or 38⁄100 meters

Question 7.

91 centimeters = ____________ or ____________ meters

Answer: 0.91 or 91⁄100 meters

Explanation:

1 meter = 100 centimeters

91 centimeters = 0.91 or 91⁄100 meters

**Problem Solving**

Question 8.

The magazine Barbara is reading is 25 centimeters long. She says it is 0.25 decimeters long. Is she collect? Explain.

Answer: She is wrong. Correct is 2.5 decimeters is correct.

Explanation:

1 decimeter = 10 centimeters

1 centimeter = 1⁄10 decimeter = 0.1 decimeter

25 centimeters = 25⁄10 decimeter = 2.5 decimeter

Question 9.

Will is building a fence that is 3 meters long. He is using boards that are 2 decimeters wide. How many boards does he need? Explain.

Answer: 15

Explanation:

10 decimeters= 1 meter

1 decimeter = 1⁄10 meter

each board is 2 decimeter wide. so 5 boards for each meter.

5 x 3 = 15 boards

Question 10.

Susan is cutting out squares to make a quilt. Each square is 20 centimeters on a side. How many 20 centimeter squares can she make horn a strip 20 centimeters wide and 5 meters long? Explain.

Answer: 25 quilts

Explanation:

1 meter = 100 centimeters

20 centimeters = 20⁄100 meters= 1⁄5 meter.

So 5 quilts make each meter.

So 5 quilts x 5 meter = 25 quilts

**Lesson Check**

**Fill in the bubble completely to show your answer.**

Question 11.

What fraction of a meter is 1 centimeter?

(A) \(\frac{1}{1,000}\)

(B) \(\frac{1}{10}\)

(C) \(\frac{1}{10,000}\)

(D) \(\frac{1}{100}\)

Answer: D

Explanation:

1 meter = 100 centimeters

1 centimeter = 1⁄100 meter

Question 12.

A stamp in Sam’s collection is 3 centimeters wide. How many millimeters wide is the stamp?

(A) 0.3

(B) 30

(C) 3,000

(D) 300

Answer: B

Explanation:

1 centimeters = 10 millimeters

3 centimeters = 3 x 10 = 30 millimeters

Question 13.

Pete’s dog is 58 centimeters tall. What is the dog’s height in meters?

(A) 5.8 meters

(B) 0.58 meters

(C) 50.8 meters

(D) 580 meters

Answer: B

Explanation:

100 centimeters = 1 meter

1 centimeters = 1⁄100 meter

58 centimeters = 58⁄100 meter = 0.58 meter

Question 14.

A worm is 130 millimeters long. How many centimeters long is the worm?

(A) 13

(B) 13,000

(C) 130

(D) 0.13

Answer: A

Explanation:

10 millimeters = 1 centimeter

130 millimeters = 130⁄10 centimeters = 13 centimeters

Question 15.

**Multi-Step** How many 50 centimeter pieces of ribbon can Casey cut from a roll of ribbon 60 meters long?

(A) 120

(B) 12

(C) 300

(D) 30

Answer: A

Explanation:

1 meter = 100 centimeters

1 meter = 2 x 50 centimeters

So each meter will get 2 pieces.

60 meter = 60 x 20 = 120 pieces

Question 16.

**Multi-Step** A sidewalk is 40 meters long. Each section of the sidewalk is 8 decimeters long. How many sections of sidewalk are there?

(A) 5

(B) 500

(C) 50

(D) 0.5

Answer: C

Explanation:

1 meter =10 decimeters

40 meter =40 x10 decimeters = 400 decimeters

Each section of the sidewalk is 8 decimeters long

So 400 decimeters ÷8 decimeters = 50