This handy **Spectrum Math Grade 4 Answer Key Chapter 2 Lesson 2.1 Adding Understanding Place Value (to hundreds)** provides detailed answers for the workbook questions.

## Spectrum Math Grade 4 Chapter 2 Lesson 2.1 Adding Understanding Place Value (to hundreds) Answers Key

**Write each number in expanded form.**

Question 1.

a. 54

__50 + 4__

b. 608

__________

Answer:

The expended form of the number is based on the place value of the number.

The expended form of 608 is 600 + 8.

Here 608 is splits into 6 hundreds and 8 ones.

c. 32

__________

Answer:

The expended form of the number is based on the place value of the number.

The expended form of 30 + 2

Here 32 is splits into 3 tens and 2 ones.

d. 421

__________

Answer:

The expended form of the number is based on the place value of the number.

The expended form of 421 is 400 + 20 + 1.

Here 421 is splits into 4 hundreds 2 tens and 1 ones.

Question 2.

a. 430

__________

Answer:

The expended form of the number is based on the place value of the number.

The expended form of 430 is 400 + 30.

Here 430 is splits into 4 hundreds 3 tens.

b. 549

__________

Answer:

The expended form of the number is based on the place value of the number.

The expended form of 549 is 500 + 40 + 9.

Here 549 is splits into 5 hundreds 4 tens and 9 ones.

c. 75

__________

Answer:

The expended form of the number is based on the place value of the number.

The expended form of 75 is 70 + 5.

Here 75 is splits into 7 tens and 5 ones.

d. 699

__________

Answer:

The expended form of the number is based on the place value of the number.

The expended form of 699 is 600 + 90 + 9.

Here 699 is splits into 6 hundreds 9 tens and 9 ones.

Question 3.

a. one hundred thirty-two

____________

Answer:

One hundred thirty-two in numeric form is 132

The expended form of the number is based on the place value of the number.

The expended form of 132 is 100 + 30 + 2.

Here 132 is splits into 1 hundreds 3 tens and 2 ones.

b. seven hundred twenty-one

____________

Answer:

Seven hundred twenty-one in numeric form is 721

The expended form of the number is based on the place value of the number.

The expended form of 721 is 700 + 20 + 1.

Here 721 is splits into 7 hundreds 2 tens and 1 ones.

c. thirty-nine

____________

Answer:

Thirty-nine in numeric form is 39.

The expended form of the number is based on the place value of the number.

The expended form of 39 is 30 + 9.

Here 39 is splits into 3 tens and 9 ones.

d. eighty-seven

____________

Answer:

Eighty-seven in numeric form is 87.

The expended form of the number is based on the place value of the number.

The expended form of 87 is 80 + 7.

Here 80 is splits into 8 tens and 7 ones.

Question 4.

a. nine hundred eleven

____________

Answer:

Nine hundred eleven in numeric form is 911.

The expended form of the number is based on the place value of the number.

The expended form of 911 is 900 + 10 + 1.

Here 911 is splits into 9 hundreds, 1 tens and 1 ones.

b. five hundred thirteen

____________

Answer:

Five hundred thirteen is numeric form is 513.

The expended form of the number is based on the place value of the number.

The expended form of 513 is 500 + 10 + 3.

Here 513 is splits into 5 hundreds, 1 tens and 3 ones.

c. one hundred ninety

____________

Answer:

One hundred ninety in numeric form is 190.

The expended form of the number is based on the place value of the number.

The expended form of 190 is 100 + 90.

Here 190 is splits into 1 hundred and 9 tens.

d. seventy

____________

Answer:

Seventy in numeric form is 70

The expended form of the number is based on the place value of the number.

The expended form of 70 is 70.

Here 70 is splits into 7 tens.

**Write the numerical value of the digit in the place named.**

Question 5.

a. 872

tens

__70__

b. 934

hundreds

__________

Answer:

Given that the number is 934.

The numeric value of hundreds place of 934 is 900.

c.

326

ones

__________

Answer:

Given that the number is 326.

The numeric value of ones place of 326 is 6.

d. 304

ones

__________

Answer:

Given that the number is 304.

The numeric value of ones place of 304 is 4.

Question 6.

a. 799

hundreds

__________

Answer:

Given that the number is 799.

The numeric value of hundreds place of 799 is 700.

b. 663

tens

__________

Answer:

Given that the number is 663.

The numeric value of tens place of 663 is 60.

c. 309

tens

__________

Answer:

Given that the number is 309.

The numeric value of tens place of 309 is 0..

d. 995

hundreds

__________

Answer:

Given that the number is 995.

The numeric value of hundreds place of 995 is 900.

**Write the number word.**

Question 7.

85,034

___________

Answer:

Given that the number is 85,034.

The word form of 85,034 is eighty five thousand thirty-four.

Question 8.

11,987

___________

Answer:

Given that the number is 11,987.

The word form of 11,987 is eleven thousand nine hundred and eighty seven.