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# We will add multi-digit numbers.

Name. Learning Objective. We will add multi-digit numbers. CFU. What are we going to do?. Activate Prior Knowledge. Addition (+) means to put together . The sum is the answer to an addition problem. 1. 516 + 173. 2. 348 + 121. Make Connection.

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## We will add multi-digit numbers.

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1. Name Learning Objective We will add multi-digit numbers. CFU What are we going to do? Activate Prior Knowledge • Addition (+) means to put together. • The sum is the answer to an addition problem. 1. 516 + 173 2. 348 + 121 Make Connection Students, you already know how to add three-digit numbers. Now, we will add multi-digit numbers.

2. Concept 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. • Composingis needed when the sum is 10 or more in a place-value column1. Adding Multi-Digit Numbers Monique had \$35,785 saved for her college fund. This month, she adds another \$3,506. How much money has Monique saved? 2 7 1 3 4 2 7 1 3 4 1 3 5 6 2 1 3 5 6 2 + 6 0 3 5 2 + 6 4 3 5 8 + 4 3 9 8 + 4 3 9 8 3 5, 7 8 5 1 1 + 3, 5 0 6 3 9, 2 9 1 Monique has \$39,291. CFU Which choice shows13,562 + 4,398 lined up correctly? How do you know? A B Which addition problem needs composing? How do you know? A B Vocabulary 1 lined up and down (gesture)

3. Skill Development/Guided Practice • Addition (+) means to put together. • Composing a number means moving a group of numbers to the next higher place value. • Composingis needed when the sum is 10 or more in a place-value column. Add multi-digit numbers. Read the problem and identify2 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. Interpret3 the sum. “The sum of _______ and _______ is _______.” 1 2 3 a 4 7 6 4 1 4 4 5 1 7 6 1 2 2 3 3 3 6 2 8 5 + + + + CFU 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? 2 find 3 explain Vocabulary 1 2 3 3a

4. Skill Development/Guided Practice (continued) • Addition (+) means to put together. • Composing a number means moving a group of numbers to the next higher place value. • Composingis needed when the sum is 10 or more in a place-value column. Add multi-digit numbers. 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. Compose a number, if needed. Hint: Move a group of numbers to the next higher place value. Interpret the sum. “The sum of _______ and _______ is _______.” 1 2 3 a 4 4 distance around Vocabulary

5. Skill Development/Guided Practice (continued) Sofia solved the following addition problems. Francisco thinks that she made some mistakes. Identify any mistakes that Sofia made and correct them. 2. 1. 1 1 2 1 7 1 3 9 5 5 0 6 6 + 7 3 9 4 7 + 7 2 5 0 1 8 5 6 9 3 8 6 4 0 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? CFU 1 2 3 4 5

6. Relevance • Addition (+) means to put together. • Composing a number means moving a group of numbers to the next higher place value. • Composingis needed when the sum is 10 or more in a place-value column. 1 Adding multi-digit numbers will help you describe amounts. Allie has 35,479 baseball cards. She was given a box of 150 more cards. How many baseball cards does she have now? 35,479 + 150 35,629 Sample Test Question: 71. Joe has 1,236 stamps. If he gets 1,056 more, how many stamps will he have? A 2,192 B 2,292 C 226 D 180 2 Adding multi-digit numbers will help you do well on tests. Does anyone else have another reason why it is relevant to add multi-digit numbers? (Pair-Share) Why is it relevant to add multi-digit numbers? You may give one of my reasons or one of your own. Which reason is more relevant to you? Why? CFU