## 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

Question 2.
1,002 1,020

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

Question 3.
7,002 7,200 7,020

Question 4.
8,006 8,600 8,060

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.

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

Question 8.
18,020 = 10,000 + 8,000 + 20
18,200 = 10,000 + 8,000 + 200
18,020 18,200

Question 9.
2,070 2,700

Question 10.
13,200 13,020

Question 11.
5,406 5,460

Question 12.
4,130 4,103

Question 13.
31,002 30,102

Question 14.
26,008 26,800

Question 15.
10,250 10,205

Question 16.
60,802 68,002

Question 17.
42,910 42,901

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

Question 19.
9,800 9,008 9,080

Question 20.
30,200 30,002 32,000 30,020

Question 21.
40,060 40,006 40,600 46,000

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.

Question 23.
What do the numbers have in common?

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

Question 24.
Which month were the most carnival tickets sold?