Rounding
Addition
Subtraction
Word Problems
Mix It Up!
100

Round 43 to the nearest ten.

What is 40?

100

635 + 288 = ____

What is 923?

100

648 - 216 = _____

What is 432?

100

Ben has a collection of 812 stamps.  He gives his brother 345 stamps.  How many stamps does Ben have left?

What is 467?

100

Kara wrote this number sentence to show how many yellow stickers and green stickers she earned.  Which describes Kara's number sentence?

7 + 0 = 7

A. Commutative Property of Addition

B. Identity Property of Addition

C. odd + odd = odd

D. even + even = even

What is B?

Identity Property of Addition

200

There are 287 books in the classroom library.  What is 287 rounded to the nearest hundred?

What is 300?

200

Pizza Place sold 381 pizzas on Friday night, and 593 pizzas on Saturday.  How many pizzas did they sell in all?

974

200

406 - 199 = _____

What is 207?

200

Julie made $22, $55,  and $38 dollars baby-sitting last week?  How much money did she make altogether?

What is $115?

200

Amy writes a number sentence that shows the Commutative Property of Addition. Which could be Amy's number sentence?

A. (53+9) + 41 = 53 +(9+41)

B. 53 + 0 = 53

C. 41= 40 + 1

D. 53 + 9 = 9 + 53

What is D?

53 + 9 = 9 + 53

300

Round the following number to the nearest ten AND hundred.


738

What is 740 (nearest ten) and 700 (nearest hundred)?


300

Mrs. Ladd is making fruit salad for the school picnic. She bought 24 apples, 16 bananas, and 14 pears at the grocery.  How many pieces of fruit did she buy altogether?

What is 54?

300

723 - 588 = _____

What is 135?

300

The school store had 136 pencils in stock.  It sold 109 to students. How many pencils are left?

What is 27?

300

The snack stand has 38 honey granola bars and 42 maple granola bars.  About how many granola bars does the snack stand have in all?

What is 70?

400

On Friday, 209 people attended a show.  What is 209 rounded to the nearest ten?

What is 210?

400

244 + 838 = ______

What is 1,082?

400

The librarian checked in 373 books on Monday, and 505 books on Tuesday.  How many more books did she check in on Tuesday than Monday?

What is 132?

400

Ryan sent 65 messages on Monday and 93 messages on Tuesday.  He sent 213 messages on Wednesday.  How many more messages did Ryan send on Wednesday than on Monday and Tuesday together?

What is 55?

400

Sunnyday Elementary School is having its annual Read-a-thon.  The 3rd graders have read 573 books so far.  Their goal is to read more than 800 books.  What is the least number of books they need to read to reach their goal?

What is 227?

500

Nora and Lucy are playing a video game. Lucy's score is 168 points less than Nora's score.  Nora score is 754.  Which is the best estimate of Lucy's score?

A. 300

B. 400

C. 500

D. 600

What is D?

600

500

On Monday, 114 girls and 205 boys wore jeans to school.  How many students wore jeans to school on Monday?

A. 219

B. 299

C. 309

D. 319

What is 319?

500

Amber and friends collected shells at the beach.  Amber collected 372 shells, and Pablo collected 245 shells.  How many more shells did Amber collect than Pablo?

What is 127?

500
Sara received 73 votes in the school election.  Ben received 25 fewer votes than Sara.  How many students voted?

What is 121?

500

A raft company rented 213 rafts in June and 655 rafts in July.  About how many rafts did they rent in both June and July?

What is 900?

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