Rounding
Round this number to the nearest tens.
34
30
324 + 97
421
72 - 15
57
Some students at Coyote Hills had a book reading contest. The 3rd graders read 682 books and the 4th graders read 458 books. How many more books did 3rd grade read than 4th grade?
224 books
590 -204 = 386
True
Round this number to the nearest ten.
278
280
Which two numbers have the closest sum to 500? (pick 2 answers!)
a) 230
b) 310
c) 170
b and c
310 and 170 = 480
182 -117
65
Ronald has 334 baseball cards. Nick has 201 baseball cards. How many cards do they have in all?
535
Jack is given the following problem: 234 + 678. After rounding, he says the answer will be around 800 because 200+600=800. Is this true or false?
False. The rounded number would be 900
Round this number to the nearest hundreds.
851
900
653 + 279
932
363-94
269
Leo's book has 327 pages. He's read 121 pages so far. How many pages does he have left?
206 pages
True or false?
299 -165 = 140
Round this number to the nearest hundreds.
539
500
Which two numbers have the closest sum to 1,00?
a) 560
b) 400
c) 442
a and c
560 + 442 = 1,002
462 - 18
444
All of the 3rd grade classes put on a play at school. 240 people came to the first show and 154 people came to the second show. How many people came to see the show?
394 people
If I'm trying to solve this problem: 464 + 721, I can round the numbers to add 500 + 700. True or false?
True
Round this number to the nearest hundreds.
2,461
2,500
234 + 182
416
253 + __ = 500
247
There are 137 kindergarteners, 139 first graders, and 153 second graders at Crescent Elementary School. How many students are there in all?
429 students
True or False?
123-109 = 122-110
False