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Team Task • You will have FIVE minutes to work together as a team. First, you will solve individually and then come together as a team. • Each person should work on his/her slate to show your work. • Each person will have his/her own group job. • At the end of the time I will randomly call on one person who will share out. Let’s collaborate! A stadium can hold 5,028 people. In one section 496 people bought tickets, 828 people sat in another section, and 2,467 people sat in the third section. Rounding each number to the nearest hundred, about how many seats were left in the stadium? Each student needs to solve the problem. Then discuss within your group. 4.M.NBT.A.03 I can round multi-digit numbers to any place. Essential Questions • What is rounding? How can you use it to estimate? • What is place value? How can you use place value to help you understand rounding? What is rounding!? • Rounding is when you reduce (or lessen) the digits in the number while trying to keep the value the same. • Rounding makes it easier to do math problems. Think about this... • Let’s say you stop at QT for some snacks. You only have $5 and want to buy a few items. You plan to get a drink which is .99¢, a candy bar which is $1.29, and a bag of chips which is $1.99. Will you have enough money? If you round the cost of each item (up or down depending on the amount) you can see if you will have enough money. Let’s try... • .99¢ drink This rounds to a $1. • $1.29 candy bar This rounds to a $1. • $1.99 bag of chips This rounds to be $2. If I add them all up, I will spend about $4. I should have enough money to purchase all the items. Rounding • In that last example, we rounded to the nearest dollar value. • This week while rounding, we are going to be told to round to specific place values. • We must know our place values to help us round. Place Values In order to round to a specific place value, we need to first find out where the place value is located. Let’s take a look... Rounding Rap Let’s review our rules • First circle the place value you are asked to round to. • Second, underline the number to the RIGHT. • If the number is 0-4, the circled number stays the same. • If the number is 5-9, the circled number goes up one. Lastly, all the other numbers to the right become zeros. What if... stays the same Round 873 to the nearest ten 8 7 03 First circle the digit in the ten’s place value Next, underline the digit to the RIGHT. 0-4 the circle number stays the same 5-9 the circle number goes up Flex your muscles and be a hero all the other numbers become a zero Try these with your group: Remember your steps! 1. Round the number 946 to the nearest ten. 950 2. Round the number 1,346 to the nearest hundred. 1,300 3. Round the number 2,892 to the nearest hundred. 2,900 Let’s check your answers... Work with your DMS Remember partner: your steps! 1. Round the number 721 to the nearest ten. 720 2. Round the number 834 to the nearest hundred. 800 3. Round the number 4,824 to the nearest thousand. 5,000 Let’s check your answers... Flying solo Remember your steps! 1. Round the number 408 to the nearest ten. 410 2. Round the number 9,254 to the nearest hundred. 9,300 3. Round the number 3,192 to the nearest thousand. 3,000 Let’s check your answers... More solo practice: Remember your steps! • Round the number 12,839 to the nearest thousand. • Round the number 879,294 to the nearest ten thousand. • Round 7,295,285 to the nearest million. Closure • Think about the steps for rounding a whole number. • Take two minutes to write the steps on your slate. • After three minutes, share within your group the steps to rounding.