Rounding Rules! 4 5 6 3 2 7 1 by Emily Baldry http://www.teacherspayteachers.com/Store/Emily-Baldry 8 Common Core State Standard 4.NBT.2 & 4.NBT.3 9

Shhh…. Something’s coming… it’s…

What is this number rounded to the nearest ten? 36 What is this number rounded to the nearest ten?

What you’re really being asked is – is this number closer to 30 or 40? 36 What you’re really being asked is – is this number closer to 30 or 40? Let’s find out! 30 35 40

36 36 is closer to 40. Therefore, the number 36 rounded to the nearest ten is 30 35 40

Now you try a few… 1. Round 72 to the nearest ten. 71 72 70 80 Because 72 is closer to 70, 72 rounds to 70. 2. Round 19 to the nearest ten. 11 12 13 14 15 16 17 18 19 10 20 Because 19 is closer to 20, 19 rounds to 20. 3. Round 99 to the nearest ten. 91 92 93 94 95 96 97 98 99 90 100 Because 99 is closer to 100, 99 rounds to 100.

Round 6 , 7 7 3 to the nearest tens place. When the numbers get bigger, it gets a little trickier… Round 6 , 7 7 3 to the nearest tens place.

Step 1:Find the number in the tens place. 6 , 7 7 3 Step 1:Find the number in the tens place. Step 2: Underline everything that comes before this number also. Step 3: Now we’re looking at the number 677!! This number will either stay 677 or round up to the next number, 678. Find the number after the number in the tens place and circle it.

6 , 7 7 3 To figure out if 677 is staying 677 or The circled ‘neighbor’ is called the ‘BOSSY NEIGHBOR’ because it tells the underlined number what to do. To figure out if 677 is staying 677 or rounding up to 678, we need to use the bossy neighbor and our rounding hill.

4 5 6 3 2 7 1 8 9 ROUND STAY THE UP SAME If the BOSSY NEIGHBOR is 0, 1, 2, 3, or 4 then the underlined number will If the BOSSY NEIGHBOR is 5, 6, 7, 8, or 9 then the underlined number will ROUND UP STAY THE SAME 4 5 6 3 2 7 1 8 9

6 , 7 7 3 3 What is the bossy neighbor here? Now I find the bossy neighbor on the rounding hill! Stays the same! Here is 3!

6 , 7 7 3 , 6 7 7 3 tells 677 to stay the same! STAY 677 677 STAYS AND EVERYTHING PAST THE UNDERLINED NUMBER BECOMES A 0! , 6 7 7 6,773 ROUNDED TO THE NEAREST TEN IS 6,770.

ROUND THE FOLLOWING NUMBER TO THE NEAREST THOUSAND. Let’s see another… ROUND THE FOLLOWING NUMBER TO THE NEAREST THOUSAND. 1 4 , 5 0 7 1. Underline the number in the thousands place. 6. Everything past the underlined number becomes a 0. 4. Find the bossy neighbor on the rounding hill. 5. 14 rounds up to the next number. 2. Underline everything before it also. 3. Circle the bossy neighbor. 15, 5 says ROUND UP!

ROUND THE FOLLOWING NUMBER Let’s see another… ROUND THE FOLLOWING NUMBER TO THE NEAREST HUNDRED. 6 8 1 , 3 0 4 1. Underline the number in the hundreds place. 6. Everything past the underlined number becomes a 0. 4. Find the bossy neighbor on the rounding hill. 5. 6813 STAYS THE SAME. 2. Underline everything before it also. 3. Circle the bossy neighbor. 681,3 0 says STAY!!

ROUND THE FOLLOWING NUMBER TO THE NEAREST THOUSAND. YOU TRY… ROUND THE FOLLOWING NUMBER TO THE NEAREST THOUSAND. 1 2 , 9 2 2 1. Underline the number in the thousands place. 6. Everything past the underlined number becomes a 0. 4. Find the bossy neighbor on the rounding hill. 5. 12 rounds up to the next number - 13. 2. Underline everything before it also. 3. Circle the bossy neighbor. 13, 9 says ROUND UP!!

r e T Y T H s e on your own 1. Round 284 to the nearest ten. 28 284 STAY THE SAME!! 2. Round 32,506 to the nearest hundred. 32,506 32,5 STAY THE SAME!! 3. Round 29,882 to the nearest thousand. 29,882 30, ROUND UP!!

For the next 2 days, use the following work pages. And now… For the next 2 days, use the following work pages. Print slide 19 – one for each student to use. Print slide 20 for independent practice. Slide 21 is your key to assess with. Print slide 22 for more independent practice. Slide 23 is your key to assess with.

Clipart by ScrappinDoodles

Rounding Numbers Name_____________________________ Step 1 Find the number in the place that you are rounding. Step 2 Underline everything that comes before this number also. Step 3 Find the number to the right of the place we’re rounding to and circle the bossy neighbor. Step 4 Find the bossy neighbor on your round hill to decide what to do with the underlined number! Common Core State Standard 4.NBT.3 Round the following numbers to the nearest ten. 1. 2. 2 5 6 _______________ 1 , 9 2 2 _______________ Round the following numbers to the nearest hundred. 3. 4. 7, 2 6 9 _______________ 6 6 7 _______________ Round each number to the nearest thousand. 5. 6. 1 2, 7 9 3 _______________ 4 , 0 2 0 _______________ 7. Write a word problem with the answer being 59. Be creative! ______________________________________________________________________________________________________________________________________________________________________

Rounding Numbers Name_____________________________ Step 1 Find the number in the place that you are rounding. Step 2 Underline everything that comes before this number also. Step 3 Find the number to the right of the place we’re rounding to and circle the bossy neighbor. Step 4 Find the bossy neighbor on your round hill to decide what to do with the underlined number! KEY Common Core State Standard 4.NBT.3 Round the following numbers to the nearest ten. 1. 2. 2 5 6 _______________ 1 , 9 2 2 _______________ Round the following numbers to the nearest hundred. 3. 4. 7, 2 6 9 _______________ 6 6 7 _______________ Round each number to the nearest thousand. 5. 6. 1 2, 7 9 3 _______________ 4 , 0 2 0 _______________ 260 1,920 7,300 700 13,000 4,000 7. Write a word problem with the answer being 59. Be creative! ______________________________________________________________________________________________________________________________________________________________________ answers will vary – check for accuracy

Name ___________________________________ Rounding + Place Value! Name ___________________________________ Common Core State Standard 4.NBT.2 & 4.NBT.3 Place Value Review + Rounding ______ ______ ______ , ______ ______ ______ Place a 7 in the thousands place. Place a 0 in the ten-thousands place. Place a 9 in the ones place. Place a 3 in the hundred-thousands place. Place a 4 in the tens place. Place a 6 in the hundreds place. Write this number in word form. ___________________________________________________________________________________________________________________________________________________________________________ Write this number in expanded form. ____________________________________________________________________________________________________________________________________________ Round this number to the nearest ten. _____________________________________________ Round this number to the nearest hundred. ________________________________________ Round this number to the nearest ten-thousand. ____________________________________

Name ___________________________________ Rounding + Place Value! KEY Name ___________________________________ Common Core State Standard 4.NBT.3 Place Value Review + Rounding ______ ______ ______ , ______ ______ ______ Place a 7 in the thousands place. Place a 0 in the ten-thousands place. Place a 9 in the ones place. Place a 3 in the hundred-thousands place. Place a 4 in the tens place. Place a 6 in the hundreds place. 307,649 Write this number in word form. ___________________________________________________________________________________________________________________________________________________________________________ three hundred seven thousand, six hundred forty-nine Write this number in expanded form. ____________________________________________________________________________________________________________________________________________ 300,000+7,000+600+40+9 307,650 Round this number to the nearest ten. _____________________________________________ Round this number to the nearest hundred. ________________________________________ Round this number to the nearest ten-thousand. ____________________________________ 307,600 310,000

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