## Envision Math 6th Grade Textbook Answer Key Topic 1.2 Comparing and Ordering Whole Numbers

**Comparing and Ordering Whole Numbers**

How can you compare numbers?

Answer:

Use the data in the table to compare the heights of the buildings. Which is taller, the Petronas Towers or the Sears Tower?

**Another Example**

How do you compare and order more than two numbers?

Answer:

Order the heights of the buildings in the above table from least to greatest.

Step 1:

Write the numbers, lining up the places. Compare the digits.

Step 2:

Write the remaining numbers, lining up the places. Compare.

Step 3:

Order the numbers and the heights of the buildings from least to greatest.

1,380; 1,450; 1,483; 1,670

Jin Mao Tower, Sears Tower, Petronas Towers, Taipei 101

**Guided Practice**

**Do you know HOW?**

In 1 and 2, use < or > to compare.

Question 1.

27,318 _____ 28,001

Answer:

27,318 28,001

Explanation:

Question 2.

1,000,001 _____ 1,000,010

Answer:

1,000,001 1,000,010

Explanation:

In 3, order the numbers from least to greatest.

Question 3.

3,964 4,160 3,395 4,000

Answer:

3,395; 3,964; 4,000; 4,160

Explanation:

**Do you UNDERSTAND?**

Question 4.

In the example at the top, where do you begin comparing digits?

Answer:

Thousands place

Explanation:

Question 5.

Two International Finance Centre is 1,362 feet tall. Use the table above to find which is taller,Two International Finance Centre or the Jin Mao Tower?

Answer:

Jin Mao Tower

Explanation:

Step 1:

Write the numbers in a column to line up the places.

1,483

1,450

Compare the digits from left to right.

Step 2:

Find the first place where

the digits are different.

1,483

1,450

Use > or < to compare. 8 > 5

So, 1,483 > 1,450

Step 3:

Write your answer.

1,483 > 1,450

or

1,450 < 1,483

The Petronas Towers are taller than the Sears Tower

**Independent Practice**

For 6 through 8, use < or > to compare.

Question 6.

8,867 ____ 8,896

Answer:

8,867 8,896

Explanation:

Question 7.

102,086 _______ 100,266

Answer:

102,086 100,266

Question 8.

5,743,834 _____ 5,745,618

Answer:

5,743,834 5,745,618

Explanation:

For 9 and 10, order the numbers from least to greatest.

Tips: Compare each place from left to right.

Question 9.

85,634; 86,364; 86,446; 68,989

Answer:

68,989; 85,634; 86,364; 86,446

Explanation:

Question 10.

4,088,777; 4,221,000; 4,202,006

Answer:

4,088,777; 4,202,006; 4,221,000

Explanation:

For 11 and 12, order the numbers from greatest to least.

Question 11.

400 billion; 857 thousand; 3 trillion

Answer:

3 trillion; 400 billion; 857 thousand

Explanation:

Question 12.

5,743,834; 5,754,618; 5,900,962

Answer:

5,900,962; 5,754,618; 5,743,834

Explanation:

**Problem Solving**

Question 13.

Writing to Explain The SR-71 spy plane can fly at an altitude of 85,000 feet. Explain how you would compare this altitude with the altitude of the Helios shown below. Tell which plane could fly higher.

Answer:

See margin.

Explanation:

Question 14.

Number Sense When comparing 1,290 km and 1,130 km, which place do you use to determine which number is greater?

Answer:

Hundreds place

Explanation:

Question 15.

Geometry Which measurement of this rectangular vegetable garden has the greatest value?

A. length

B. width

C. perimeter

D. length + width

Answer:

C. perimeter

Explanation: