We will add numbers with composing.

CCSS 3rd Grade Numbers and Operations in Base Ten 2.1Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

Lesson to be used by EDI-trained teachers only.

READY TO TEACHSM EDI® Lessons©2013 All rights reserved.

We will add numbers with composing.

What are we going to do?What are we going to do?

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Students, you already know how to add one-digit numbers. Sometimes, the sum of two one-digits number is two digits so we must compose a ten. Now, we will add numbers with composing.

Students, you already know how to add one-digit numbers. Sometimes, the sum of two one-digits number is two digits so we must compose a ten. Now, we will add numbers with composing.

Make ConnectionMake Connection

NameLearning Objective

Learning Objective

Activate Prior Knowledge

Activate Prior Knowledge

Add the numbers.

9 6

8 4

1. 2.

©2013 All rights reserved.

CCSS 3rd Grade Numbers and Operations in Base Ten 2.1Add numbers with composing.


1 lined up and down (gesture)1 lined up and down (gesture)

VocabularyVocabulary

Concept DevelopmentConcept Development

Addition () means to put together. • The sum is the answer to an addition problem.• To add, numbers are lined up by the place value of their digits. Composing a number means moving a group of numbers to the next higher place value.• Composing is needed when the sum is 10 or more in a place-value column1.

4 3 81 5 45 9 2

Addition with Composing

438 154

Mr. Reyes’ 3rd-grade class is collecting canned food to donate to the local homeless shelter. So far, the class has collected 438 cans. Today, Mr. Reyes’ students brought in 154 more cans. How many cans has the class collected?

Mr. Reyes’ 3rd-grade class is collecting canned food to donate to the local homeless shelter. So far, the class has collected 438 cans. Today, Mr. Reyes’ students brought in 154 more cans. How many cans has the class collected?

Mr. Reyes’ class collected 592 cans.

1

Com

posin

g a

Ten

Which choice shows 562 + 398 lined up correctly? How do you know?

A B

Which addition problem needs composing? How do you know?

A B

Which choice shows 562 + 398 lined up correctly? How do you know?

A B

Which addition problem needs composing? How do you know?

A B

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2 4 3+ 3 9 1

2 4 3+ 3 5

1

5 6 2+ 3 9 8

5 6 2+ 3 9

8




How did I/you identify what is being added?How did I/you line up the digits by place value?How did I/you add each digit? How did I/you compose a number, if needed?


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1

3a

23

2 find3 explain

2 find3 explain


Add numbers with composing.1 Read the problem and identify2 what is being added, if necessary.

Line up the digits by place value, if necessary. Add the digit in each place value. Hint: Start from the ones place.

Compose a number, if needed. Hint: Move a group of numbers to the next higher place value.

Interpret3 the sum. “The sum of _______ and _______ is _______.”

a

23

4

Skill Development/Guided Practice

Skill Development/Guided Practice Addition () means to put together. Composing a number means moving a group of numbers to the next higher place value.• Composing is needed when the sum is 10 or more in a place-value column.

1. 456 + 325 = 2. 417 + 268 =

3. 763 + 182 = 4. 673 + 294 =

3 2 5

654 2 6 8

714




Skill Development/Guided Practice (continued)




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1

3a

23

Add numbers with composing.1 Read the problem and identify what is being added, if necessary. (underline)

Line up the numbers by the place value of their digits, if necessary. Add the digit in each place value. Hint: Start from the ones place.


Interpret the sum. Hint: Answer the question.

a

23

4

Addition () means to put together. Composing a number means moving a group of numbers to the next higher place value.• Composing is needed when the sum is 10 or more in a place-value column.

5. There are 376 feet of lumber at the construction site. Another 412 feet of lumber was delivered. How many feet of lumber are at the construction site?

There are ____________________at the construction site.

6. Margie and her friend Mari collect stickers as a hobby. Margie collected 531 stickers, and Mari collected 162 stickers. How many stickers did they collect together?

Margie and Mari collected ________________________.






7. Marcie’s class has collected $475 for their field trip. Marcie brought in another $15 today. How much money has Marcie’s class collected now?

Marcie’s class has now collected _____________.

8. Texas Ted owns 652 acres4 of land. If he buys another 57 acres of land, how many acres of land will he have in all?

Texas Ted will have ___________________________.

4 unit of land measure4 unit of land measure


How did I/you determine what the question is asking?How did I/you determine the math concept required?How did I/you determine the relevant information?How did I/you solve and interpret the problem?How did I/you check the reasonableness of the answer?

How did I/you determine what the question is asking?How did I/you determine the math concept required?How did I/you determine the relevant information?How did I/you solve and interpret the problem?How did I/you check the reasonableness of the answer?

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4

1

32

5




Adding numbers with composing will help you describe amounts.

Adding numbers with composing will help you do well on tests.

1

Does anyone else have another reason why it is relevant to add numbers with composing? (Pair-Share) Why is it relevant to add numbers with composing? You may give me one of my reasons or one of your own. Which reason is more relevant to you? Why?

Does anyone else have another reason why it is relevant to add numbers with composing? (Pair-Share) Why is it relevant to add numbers with composing? You may give me one of my reasons or one of your own. Which reason is more relevant to you? Why?

CFUCFU

2

RelevanceRelevance


Jeremiah has 479 baseball cards. He was given a box of 150 more cards. How many baseball cards does he have now?

Jeremiah has 479 baseball cards. He was given a box of 150 more cards. How many baseball cards does he have now?

479150

629

Sample Test Question:

17. The small town of Fillmore has 489 grown-ups and 238 children. How many people live in Fillmore?

A 727B 617C 717D 627




___________________________________________

___________________________________________

What did you learn today about adding numbers with composing? (Pair-Share) Use words from the word bank.

Day 1 ___________________________________________

________________________________________________

Day 2 ___________________________________________

________________________________________________

Access Common CoreAccess Common Core

Summary ClosureSummary Closure

Add numbers with composing.1 Read the problem and identify what is being added, if necessary.

Line up the numbers by the place value of their digits, if necessary. Add the digit in each place value. Hint: Start from the ones place.


Interpret the sum. Hint: “The sum of ___ and ___ is ___.” or Answer the question.

a

23

4


Skill ClosureSkill Closure

How would you line up the addition problem 478 + 14? How do you know?

1. 456 + 238 = 2. At Berkley Elementary school, there are 185 students in 3rd grade and 203 students in 4th grade. How many students are in 3rd and 4th grade?

There are _____________________.

2 3 8

654

Word Bankcompose

line upplace value

sum




NameIndependent Practice

Independent Practice

Add numbers with composing.

1Read the problem and identify what is being added, if necessary.Line up the numbers by the place value of their digits, if necessary. Add the digit in each place value. Hint: Start from the ones place.

Compose a number, if needed. Hint: Move a group of numbers to the next higher place value.Interpret the sum. Hint: “The sum of ___ and ___ is ___.” or Answer the question.

a

23

4


1. 537 + 116 = 2. 648 + 261 =

1 1 6

735

3. The Perez family traveled 452 miles the first day of their vacation and 317 miles the second day of their vacation. How far did the Perez family travel?

The Perez family traveled ____________________.

4. John grew two pumpkins. The first weighed 173 ounces and the second weighed 89 ounces. How much did the two pumpkins weigh?

The two pumpkins weighed ____________________.




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NameAccess Common Core

Access Common Core

Periodic Review 1Periodic Review 1

Before completing the problems below, identify the addition problems that will need composing. In which place value is composing needed?Explain how you know an addition problem will need composing.

1c.

2 9 1

766

3 1 7

103

1 4 7

604

1b. 1a.

2c.

4 1 2

433

6 2 4

392

1 7 6

616

2b. 2a.

3c.

4 5 8

913

2 0

398

5 6 8

003

3b. 3a.




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NamePeriodic Review 2

Periodic Review 2


1. Allan has 248 pennies in his collection. His older brother has 427 pennies. If they combine their pennies, how many pennies do they have?

Allan and his brother have ________________________.

2. Karina’s 3rd-grade class went on a field trip to the zoo. She learned that the male gorilla weighed 378 pounds and the female gorilla weighed 163 pounds. How much do the two gorillas weigh altogether?

The two gorillas weigh ________________________.

Annabelle spilled White-Out on her math homework. Help Annabelle fix her homework by filling in the missing numbers.Explain how you knew which numbers were missing.

2 7 2

533

6 1 7

11.

7 3 7

391

7 45

12. 3.

1 7 6

612

27 8

1




NamePeriodic Review 3

Periodic Review 3


1. Edwina read 637 pages last month. So far this month, she has read 149 pages. How many pages has Edwina read in the past two months?

Edwina has read ________________________.

1. Describe and correct the error made in each of the addition problems.

1c. 1 1

2 4 8

415

268

1 1

2 0 8

376

189

1b.

3 2 6

811

445

1 11a.

2. Describe and correct the error made in each of the addition problems.

2c.

4 9 6

223

7 1 8

1 9 8

066

857

2b.

2 1 7

444

156

2a.

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