## Math Expressions Common Core Grade 4 Unit 1 Lesson 2 Answer Key Place Value Patterns

**Math Expressions Grade 4 Unit 1 Lesson 2 Homework**

**Read and write each number in standard form.**

Question 1.

90 + 2 ________

Answer:

90 + 2 = 92.

Question 2.

600 + 80 + 9 _________

Answer:

600 + 80 + 9

= 680 + 9

= 689.

Question 3.

2,000 + 800 + 50 + 7 __________

Answer:

2,000 + 800 + 50 + 7

= 2800 + 50 + 7

= 2850 + 7

= 2857.

Question 4.

3,000 + 80 + 5 __________

Answer:

3,000 + 80 + 5

= 3080 + 5

= 3085.

**Read and write each number in expanded form.**

Question 5.

48 ____________

Answer:

48 = (4 × 10) + (8 × 1)

= 40 + 8

Question 6.

954 __________

Answer:

954 = (9 × 100) + (5 × 10) + (4 × 1)

= 900 + 50 + 1

Question 7.

6,321 ____________

Answer:

6321 = (6 × 1000) + (3 × 100) + (2 × 10) + (1 × 1)

= 6000 + 300 + 20 + 1

Question 8.

4,306 ____________

Answer:

4306 = (4 × 1000) + (3 × 100) + (0 × 10) + (6 × 1)

= 4000 + 300 + 0 + 6

Question 9.

1,563 ____________

Answer:

1563 = (1 × 1000) + ( 5 × 100) + (6 × 10) + (3 × 1)

= 1000 + 500 + 60 + 3

Question 10.

2,840 ____________

Answer:

2840 = (2 × 1000) + (8 × 100) + (4 × 10) + (0 × 1)

= 2000 + 800 + 40 + 0

**Read and write each number in word form.**

Question 11.

300 + 20 + 5 ____________

Answer:

300 + 20 + 5 = Three hundred and twenty five.

Question 12.

5,000 + 700 + 40 + 8 ______________ .

Answer:

5,000 + 700 + 40 + 8 = Five thousand seven hundred and forty eight.

Question 13.

9,000 + 400 + 6 ____________

Answer:

9,000 + 400 + 6 = Nine thousand four hundred and six.

**Read and write each number ¡n standard form.**

Question 14.

seventy-six ____________

Answer:

seventy-six = 76.

Question 15.

three hundred one ____________

Answer:

three hundred one = 301.

Question 16.

four thousand, two hundred sixteen ____________

Answer:

four thousand, two hundred sixteen = 4216.

Question 17.

five thousand, one hundred forty-two ____________

Answer:

five thousand, one hundred forty-two = 5142.

**Write the value of the underlined digit.**

Question 18.

287 ______

Answer:

287 = 8 tens = 8 × 10 = 80.

Question 19.

8,792 ______

Answer:

8,792 = 8 thousands = 8 × 1000 = 8000.

Question 20.

7,812 ______

Answer:

7,812 = 8 hundreds = 8 × 100 = 800.

**Math Expressions Grade 4 Unit 1 Lesson 2 Remembering**

**Multiply or divide.**

Question 1.

6 × 4 = ____________

Answer:

6 × 4 = 24.

Question 2.

56 ÷ 8 = ________

Answer:

56 ÷ 8 = 7.

Question 3.

45 ÷ 9 = ___________

Answer:

45 ÷ 9 = 5.

Question 4.

6 × 6 = _________

Answer:

6 × 6 = 36.

Question 5.

3 × 7 = ____________

Answer:

3 × 7 = 21.

Question 6.

48 ÷ 6 = ________

Answer:

48 ÷ 6 = 8.

Question 7.

Grace read six books over the summer. Her sister read three times that number. How many books did Grace’s sister read over the summer?

Answer:

Number of books Grace read over the summer = 6.

Her sister read three times that number.

=> Number of books Grace’s sister reads over the summer = 3 × Number of books Grace read over the summer

= 3 × 6

= 18.

**Write the number of thousands and the number of hundreds in each number.**

Question 8.

5,812

____________ thousands

____________ hundreds

Answer:

5,812

5 thousands.

8 hundreds.

Question 9.

7,026

____________ thousands

____________ hundreds

Answer:

7,026

7 thousands.

0 hundreds.

**Make a place value drawing for each number, using ones, quick tens, hundred boxes, and thousand bars.**

Question 10.

603

Answer:

Question 11.

3,187

Answer:

Question 12.

**Stretch Your Thinking** Mr. Thomas writes 4,964 on the board. Amy says the value of the underlined digit is 9. Chris said the value is 900. Which student is correct? Explain.

Answer:

Yes, Chris is correct because the value of 9 digit in number 4964 is nine hundreds = 9 × 100 = 900.