CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Use place value understanding to round multi-digit whole numbers to any place. Lesson to be used by EDI-trained teachers only. READY TO TEACH SM EDI ® Lessons ©2013 All rights reserved. What are we going to do? CFU Students, you already know how to identify the place value of numbers. Now, we are going to use place value to round multi-digit numbers. Make Connection We will round multi-digit numbers. Learning Objective Activate Prior Knowledge Place value: The place is the position of a digit in a number. The value is the worth of the digit due to its position. 9 3, , The value of 9 in 93,671 is _______. The value of 7 in 97,526 is _______. 90,000 97, What is the value of the digit 9? 2. What is the value of the digit 7?

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. Would 4,350 rounded to the nearest thousand round up or down? How do you know? A up B down Would 5,670 rounded to the nearest thousand round up or down? How do you know? A up B down In your own words, what does it mean to round a multi-digit number? “Rounding a multi-digit number means __________.” CFU Rounding multi-digit numbers. Concept Development 82,273 Round 82,273 to the nearest thousand. 82,000 83,000 82,50082,237 82,23782,000 82,00083,000 82,237 rounded to the nearest thousand is 82,000 because it is nearer in value to 82,000 than 83, ,530 Round 787,530 to the nearest ten thousand. 780,000790, ,000787, , ,000790, , ,530 rounded to the nearest ten thousand is 790,000 because it is nearer in value to 790,000 than 780,000. 4,000 5,000 4,500 5,000 6,000 5,500

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. 1 find 2 right for a certain purpose 3 explain Vocabulary Skill Development/Guided Practice Read the problem and identify 1 the place value to round to. (circle) Label the number line with the appropriate 2 numbers. Place the given number on the number line. Round the number up or down. Interpret 3 your answer. (write) Round multi-digit numbers To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. 1.Round to the nearest thousand. 45,692 __________ rounded to the nearest thousand is ________ because ______________________________ ______________________________. 2. Round to the nearest thousand. 36,428 __________ rounded to the nearest thousand is ________ because ______________________________ ______________________________. 45,000 45,500 46,000 37,000 45,692 36,000 36,550 36,428 45,692 46,000 36,428 36,000 it is nearer in value to 46,000 than 45,000. it is nearer in value to 36,000 than 37,000. How did I/you identify the place value to round to? How did I/you label the number line? How did I/you place the given number on the number line? How did I/you round the number? CFU

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice (continued) Read the problem and identify the place value to round to. (circle) Label the number line with the appropriate numbers. Place the given number on the number line. Round the number up or down. Interpret your answer. (write) Round multi-digit numbers To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. How did I/you identify the place value to round to? How did I/you label the number line? How did I/you place the given number on the number line? How did I/you round the number? CFU Round to the nearest ten thousand. 213,462 __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________. 4. Round to the nearest ten thousand. 557,065 __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________. 210, , , , , , , , , , , ,000 it is nearer in value to 210,000 than 220,000. it is nearer in value to 560,000 than 550,000.

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice (continued) Read the problem and identify the place value to round to. (circle) Label the number line with the appropriate numbers. Place the given number on the number line. Round the number up or down. Interpret your answer. (write) Round multi-digit numbers To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. 5.Round to the nearest hundred thousand. 821,346 __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________. 6. Round to the nearest hundred thousand. 360,428 __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________. 800, , , , , , , , , , , ,000 it is nearer in value to 800,000 than 900,000. it is nearer in value to 400,000 than 300,000. How did I/you identify the place value to round to? How did I/you label the number line? How did I/you place the given number on the number line? How did I/you round the number? CFU

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice (continued) To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. 7. Round to the nearest thousand. __________ rounded to the nearest thousand is ________ because ______________________________ ______________________________. 8. Round to the nearest thousand. __________ rounded to the nearest thousand is ________ because ______________________________ ______________________________ , , , , , ,000 it is nearer in value to 452,000 than 451,000. it is nearer in value to 370,000 than 369,000. Read the problem and identify the place value to round to. (circle) Determine 4 whether to round up or down. Hint: Look at the digit in the next place value lower. Round the number. Interpret your answer. (write) Round multi-digit numbers How did I/you identify the place value to be rounded? How did I/you determine whether to round up or down? How did I/you round the number? CFU figure out Vocabulary

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice (continued) To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. 9. Round to the nearest ten thousand. __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________. 10. Round to the nearest ten thousand. __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________ , , , , , ,000 it is nearer in value to 410,000 than 420,000. it is nearer in value to 370,000 than 360,000. Read the problem and identify the place value to round to. (circle) Determine whether to round up or down. Hint: Look at the digit in the next place value lower. Round the number. Interpret your answer. (write) Round multi-digit numbers How did I/you identify the place value to be rounded? How did I/you determine whether to round up or down? How did I/you round the number? CFU 1 2 3

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice (continued) To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. 11. Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________. 12. Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________ , , , , , ,000 it is nearer in value to 500,000 than 400,000. it is nearer in value to 300,000 than 400,000. Read the problem and identify the place value to round to. (circle) Determine whether to round up or down. Hint: Look at the digit in the next place value lower. Round the number. Interpret your answer. (write) Round multi-digit numbers How did I/you identify the place value to be rounded? How did I/you determine whether to round up or down? How did I/you round the number? CFU 1 2 3

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Skill Development/Guided Practice (continued) Eduardo rounded the following numbers to the nearest ten thousand. Some of his answers are incorrect. Cross out any incorrect answers and write in the correct ones. 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 Explain the mistake that Eduardo was making when he rounded the numbers above. __________________________________________________________________ 613, , , , , , , , ,000340,000880,000810, ,000690,000120,000730, , , ,000 Eduardo rounded the numbers with 5 in the thousands place down. He should have rounded those numbers up.

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. 1 Does anyone else have another reason why it is relevant to round multi-digit numbers? (Pair-Share) Why is it relevant to round multi-digit numbers? You may give one of my reasons or one of your own. Which reason is more relevant to you? Why? CFU 2 Relevance To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. Rounding multi-digit numbers will help you do well on tests. Sample Test Question: 29. Which of the following numbers would be rounded down to the nearest ten thousand? 206, , , ,124 YesNo YesNo YesNo YesNo Rounding numbers will make it easier to manage money. Sarah wanted to buy a new car. The price was $19,875. She also wanted to buy a new television that cost $1,598. She knows that she needs about $22,000 to get both.

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. What did you learn today about rounding multi-digit numbers? (Pair-Share) Use words from the word bank. Skill Closure Access Common Core Summary Closure Word Bank round value nearer greater lesser multi-digit Read the problem and identify the place value to round to. (circle) Determine whether to round up or down. Hint: Look at the digit in the next place value lower. Round the number. Interpret your answer. (write) Round multi-digit numbers Round to the nearest thousand. __________ rounded to the nearest thousand is ________ because ______________________________ ______________________________. 2. Round to the nearest ten thousand. __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________ , , , , , ,000 it is nearer in value to 760,000 than 750,000. it is nearer in value to 247,000 than 248,000. To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value. Albert thinks that 253,430 rounded to the nearest ten thousand is 260,000. Do you agree with his answer? Why or why not? Use the number line to explain. I do not agree with Albert because 253,430 is closer to 250, , , , ,430

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Read the problem and identify the place value to round to. (circle) Label the number line with the appropriate numbers. Place the given number on the number line. Round the number up or down. Interpret your answer. (write) Round multi-digit numbers Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________. 2. Round to the nearest ten thousand. __________ rounded to the nearest ten thousand is ________ because _______________________________ ______________________________. Independent Practice To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value , , , , , , ,000 it is nearer in value to 800,000 than 700, , , , , ,000 it is nearer in value to 900,000 than 890,000.

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Independent Practice (continued) 3. Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________. 4. Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________. 5. Round to the nearest ten thousand. __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________. 6. Round to the nearest thousand. __________ rounded to the nearest thousand is ________ because ______________________________ ______________________________ , , , , , ,000 it is nearer in value to 700,000 than 600,000. it is nearer in value to 600,000 than 500,000. Read the problem and identify the place value to round to. (circle) Determine whether to round up or down. Hint: Look at the digit in the next place value lower. Round the number. Interpret your answer. (write) Round multi-digit numbers To round a multi-digit number is to change it to a near value. Rounding down changes the number to a lesser value. Rounding up changes the number to a greater value , , , , , ,000 it is nearer in value to 776,000 than 775,000. it is nearer in value to 740,000 than 730,000.

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Periodic Review 1 Access Common Core 1. Round to the nearest ten thousand. __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________. 2. Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________ , , , , , ,000 it is nearer in value to 400,000 than 500,000. it is nearer in value to 440,000 than 430, When rounding to the nearest ten thousand, Dina determined that 967,583 will be rounded down. Explain why Dina is incorrect. 2. When rounding to the nearest thousand, Joseph determined that 534,192 will be rounded up. Explain why Joseph is incorrect. 3. When rounding to the nearest hundred thousand, Jody determined that 794,354 will be rounded down. Explain why Jody is correct. Dina is incorrect because 7 is in the thousands place. The number is closer to 970,000 than 960,000. Joseph is incorrect because 1 is in the hundreds place. The number is closer to 534,000 than 535,000. Dina is correct because 9 is in the ten thousands place. The number is closer to 800,000 than 700,000.

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Periodic Review 2 Access Common Core 1. Round to the nearest thousand. __________ rounded to the nearest thousand is ________ because ______________________________ ______________________________. 2. Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________ , , , ,000620, ,000 it is nearer in value to 600,000 than 700,000. it is nearer in value to 645,000 than 646,000. O Yes O No 1. Choose Yes or No to indicate whether each statement is true about the number 94,632. 1a. 94,632 rounded to the nearest ten is 94,630. 1b. 94,632 is nearer in value to 94,000 than 95,000. 1c. 94,632 rounded to the nearest hundred thousand is 100, Choose Yes or No to indicate whether each statement is true about the number 697,841. 1a. 697,841 rounded to the nearest ten thousand is 690,000. 1b. 697,841 is nearer in value to 700,000 than 690,000. 1c. 697,841 rounded to the nearest thousand is 697,000. O Yes O No

©2013 All rights reserved. CCSS 4 th Grade Numbers and Operations in Base Ten 3.0 Round multi-digit numbers. Lesson to be used by EDI-trained teachers only. Periodic Review 3 Access Common Core 1. Round to the nearest hundred thousand. __________ rounded to the nearest hundred thousand is ________ because _______________________ ______________________________. 2. Round to the nearest ten thousand. __________ rounded to the nearest ten thousand is ________ because ______________________________ ______________________________ , , , , , ,000 it is nearer in value to 660,000 than 670,000. it is nearer in value to 900,000 than 1,000, Alice is rounding the number 797,908 to the nearest ten thousand. She thinks that the rounded number will be 790,000. Do you agree with her? Why or why not? 2. Braden is rounding the number 989,976 to the nearest hundred thousand. He thinks that the answer will be 1,000,000. Do you agree with him? Why or why not? No, I do not agree with her. The number is closer to 800,000 than 790,000. Yes, I do agree with him. The number is closer to 1,000,000 than 900,000.