## Envision Math 3rd Grade Textbook Answer Key Topic 1 Reteaching

**Reteaching**

**Set A, pages 4-5**

Write the number in expanded form, standard form, and word form.

Standard form: 236

Expanded form: 200 + 30 + 6

Word form: two hundred thirty-six

**Remember** that, in some numbers, the digit 0 is needed to hold a place.

Write each number in standard form.

Question 1.

Answer:

Question 2.

300 + 20 + 7

Answer:

Write each number in expanded form and word form.

Question 3.

456

Answer:

Question 4.

620

Answer:

**Set B, pages 6-7**

Write four thousand, sixteen in standard form and expanded form.

Standard form: 4,016

Expanded form: 4,000 + 10 + 6

**Remember** to use a comma to separate thousands from hundreds.

Write each number in standard form and expanded form.

Question 1.

Two thousand, one hundred four

Answer:

Question 2.

Six thousand, seven hundred twenty-two

Answer:

**Set C, pages 8-9**

Find the value of the 4 in 847,193.

The value is 40,000.

**Remember** that 10 thousands equal 1 ten thousand.

Write the place of each underlined digit. Then write its value.

Question 1.

341,791

Answer:

Question 2.

829,526

Answer:

Question 3.

570,890

Answer:

Question 4.

215,003

Answer:

Question 5.

197,206

Answer:

Question 6.

473,069

Answer:

Question 7.

628,174

Answer:

Question 8.

782,413

Answer:

**Set D, pages 10-12**

Compare 7,982 and 7,682.

Line up the digits by place value.

Compare the digits starting from the left.

7,982 > 7,682

**Remember**, when ordering numbers, compare one place at a time.

Compare the numbers.

Use <, >, or =.

Question 1.

479 imgg 6 912

Answer:

Question 2.

3,187 837

Answer:

Question 3.

1,156 156

Answer:

Question 4.

271 2,175

Answer:

**Set E, pages 14-15**

Write the numbers in order from least to greatest.

3,446 3,459 2,865

3 > 2 4 = 4 4 < 5

The numbers from least to greatest: 2,865; 3,446; 3,459

**Remember** to compare only two numbers at a time.

Write the numbers in order from greatest to least.

Question 1.

393 182 229

Answer:

Question 2.

1,289 2,983 1,760

Answer:

Question 3.

916 1,916 196

Answer:

Question 4.

5,201 5,120 5,210

Answer:

Question 5.

816 8,160 8,016

Answer:

Question 6.

2,485 2,458 2,845

Answer:

**Set F, pages 16–17**

When you make an organized list to solve problems, follow these steps.

Step 1: Carefully read the clues or information from the problem.

Step 2: Choose one clue or piece of information and use it to start your list.

Step 3: Repeat Step 2 as often as needed until you have used all of the clues or information to make an organized list.

**Remember** to make sure each item matches all of the clues.

Question 1.

Pedro has a red marble, a blue marble, a yellow marble, and a green marble. He told Frank to take two marbles. How many different pairs of marbles can Frank take? List the pairs.

Answer: