Rounding to the Nearest 10 or 100 with Mrs. Brown

Rounding to the Nearest Ten

100

Round 57 to the nearest 10

What is 60 (remember to underline the digit in the tens place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

200

Round 13 to the nearest ten (remember to underline the digit in the tens place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 10

300

Round 19 to the nearest 10 (remember to underline the digit in the tens place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 20

400

Round 31 to the nearest 10 (remember to underline the digit in the tens place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 10

500

Round 78 to the nearest 10 (remember to underline the digit in the tens place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 80

Rounding to the Nearest Hundred

100

What is 101 rounded to the nearest hundred (remember to underline the digit in the hundreds place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 100

200

Round 274 to the nearest hundred (remember to underline the digit in the hundreds place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 300

300

Round 781 to the nearest 100 (remember to underline the digit in the hundreds place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 800

400

Round 888 to the nearest 100 (remember to underline the digit in the hundreds place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 900

500

Round 990 to the nearest hundred (remember to underline the digit in the hundreds place, next look next door: if the number's 5-9 ROUND THAT NUMBER UP THE LINE, if the number's 4 or LESS-ROUND THAT NUMBER DOWN OH YES!)

What is 1000

Word Problems

100

Mrs. Brown has 314 bottles of glue to make slime. About how many bottles does she have?

What is 300

200

Jeremiah has 372 friends! About how many friends does he have? 

What is 400

300

3rd Grade is going on 39 field trips this year! About how many field trips is 3rd grade going on? 

What is 40

400

3A has 14 boys and 15 girls. About how many total Scholars does 3A have? 

What is 30

500

Mrs. Brown has 87 3rd Grade Scholars. Of the 87 Scholars, she wants 83 to be Proficient and Advanced. About how many total Scholars does Mrs. Brown want to be Proficient and Advanced? 

Use a break apart strategy to add.

What is 80

87 + 83 (80 + 3) 

87 + 3 = 90 

90 + 10  = 100

100 + 70 = 170

170 scholars

Rounding Vocabulary

100

Define what it means to round

What is to get an estimate

200

Define about

What is an estimate

300

What is the rule for rounding? If that numbers....

What is 5-9 round that number up the line, 4 or less go down... oh yes

400

Use mental math to add 385 and 235. Which of these shows how to break apart the numbers into hundreds, tens, and ones?

A    Break 385 into 300 + 85 + 5. Break 235 into 230 + 35.

B    Break 385 into 300 + 80 + 5. Break 235 into 200 + 30 + 5.

C    Break 385 into 300 + 0 + 85. Break 235 into 200 + 25 + 10.

D    Break 385 into 380+ 35. Break 235 into 230 + 5

What is  Break 385 into 300 + 80 + 5. Break 235 into 200 + 30 + 5.

500

Define place value chart?

What is a chart to determine the value of a digit

Test Practice

100

Round 279 to the nearest tens- Then round to the nearest hundred. 

What is 280 to the nearest tens and 300 to the nearest hundred.

200

Which Property of Addition is shown 

       in the following example.

        17 + 14 = 14 + 17 

What is Commutative Property

300

Think addition and use the add -on   

       strategy to find 325 -163.

 

^{What is (7 + 100 + 30 + 20 + 5) = 162}

^{163+ 7 = 170} 

^{170 + 100 = 270} 

^{270 + 30 = 300} 

^{300 + 20 = 320} 

^{320 + 5 = 325}

400

Which Property of Addition shown in the following example  8 + (5+9) = (8+5) + 9 

What is Associative Property

500

Use mental math to find 425 + 155. Choose a strategy to show. Ex. Number line/ make ten/ add-on

What is 580 

(100 + 50 + 5) 

425 + 100 = 525

525 + 50 = 575 

575 + 5 = 580