## Envision Math 4th Grade Textbook Answer Key Topic 1.4 Understanding Zeros in Place Value

**Understanding Zeros in Place Value**

How do you compare and order numbers with zeros?

Lena wrote three book reports. Which report used the most disk space on her computer? Use expanded form to compare and order numbers.

**Guided Practice***

Do you know HOW?

In 1 and 2, write each number in expanded form. Then write > or < for each .

Question 1.

6,400 6,004

Answer:

Question 2.

1,002 1,020

Answer:

In 3 and 4, order the numbers from greatest to least.

Question 3.

7,002 7,200 7,020

Answer:

Question 4.

8,006 8,600 8,060

Answer:

Do You Understand?

Question 5.

Number Sense Write a 5-digit number with 0 in the hundreds place and 0 in the ones place. Then, write your number in expanded form.

Answer:

Question 6.

Looking at the chart above, which book report used the least amount of disk space on Lena’s computer? How much disk space did it use?

**Independent Practice**

Leveled Practice In 7 through 17, compare. Write < or > for each .

Question 7.

1,040 1,000 + 40

1,004 = 1,000 + 4

1,040 1,004

Answer:

Question 8.

18,020 = 10,000 + 8,000 + 20

18,200 = 10,000 + 8,000 + 200

18,020 18,200

Answer:

Question 9.

2,070 2,700

Answer:

Question 10.

13,200 13,020

Answer:

Question 11.

5,406 5,460

Answer:

Question 12.

4,130 4,103

Answer:

Question 13.

31,002 30,102

Answer:

Question 14.

26,008 26,800

Answer:

Question 15.

10,250 10,205

Answer:

Question 16.

60,802 68,002

Answer:

Question 17.

42,910 42,901

Answer:

Compare the first two numbers. Which is greater, 9,050 or 9,005?

9,050 = 9,000 + 50

9,005 = 9,000 + 5

50 > 5

So, 9,050 > 9,005.

Write the numbers from greatest to least.

9,050 9,005 9,500

Write the numbers in expanded form.

9,050 = 9,000 + 50

9,005 = 9,000 + 5

9,500 = 9,000 + 500

500 > 50 > 5

So, 9,500 > 9,050 > 9,005.

Grandfather’s Journey took up the most disk space on Lena’s computer.

In 18 through 21 , order the numbers from greatest to least.

Question 18.

3,007 3,070 3,700

Answer:

Question 19.

9,800 9,008 9,080

Answer:

Question 20.

30,200 30,002 32,000 30,020

Answer:

Question 21.

40,060 40,006 40,600 46,000

Answer:

For 22 and 23, pick four numbers between 143,000 and 144,000. Include exactly two zeros in each number.

Question 22.

Order the numbers you chose from least to greatest.

Answer:

Question 23.

What do the numbers have in common?

Answer:

For 24 and 25, use the chart at the right.

Question 24.

Which month were the most carnival tickets sold?

Answer:

Question 25.

Writing to Explain Explain why this statement is NOT correct: More tickets were sold in June than August because 40 > 20.

Answer:

Question 26.

The chart at the right shows the results of this year’s reading contest. Which could NOT be the missing number?

A. 32,006

B. 33,006

C. 33,060

D. 34,006

Answer: