Rounding
What is 647 rounded to the nearest ten?
650
345 + 623 =
968
893 - 300 =
593
Nada’s sandwich shop sold 382 sandwiches in January and 400 sandwiches in February. How many sandwiches did they sell all together?
782 sandwiches
Is this pattern increasing or decreasing?
5, 25, 125, 625
This pattern is increasing.
What is 647 rounded to the nearest hundred?
600
Find the sum of 456 and 204.
660
456 - 40 =
416
Cubby’s book has 600 pages. He already read 334 of them. How many does he have left to read?
600 - 334 = 264
264 pages
What is the rule for this pattern?
2, 4, 6, 8, 10
The rule is +2.
Which number would round to 600 when rounding to the nearest hundred?
582
Rahmia decides to do magic math for 222 + 629. She adds 1 to each number and gets 223 + 630. Her final answer is 853. Is this correct? Why or why not?
She is incorrect because you cannot do magic math for addition. The answer should be 851.
Pearl says 483 - 234 = 251. Is she correct? Why or why not?
No, because you cannot subtract 4 from 3. Pearl did not borrow from the tens place. The answer should be 249.
After a math game, Nyle had 486 points and Meg had 876 points. How many more points does Meg have than Nyle?
390 more points
What number comes next in this pattern?
80, 40, 20, 10...
5
What is 32 rounded to the nearest hundred?
0
What is the sum of 424, 294, and 57?
775
300 - 199 =
101
The bear caught 123 salmon to eat in June. In July, it caught 78 salmon and 24 trout. In all, how many more salmon did it catch than trout?
123 + 78 = 201
201 - 24 = 177
177 more salmon than trout
What will the 8th number in this pattern be?
7, 10, 13, 16…
27
Xavier rounded the following numbers to the nearest ten.
456 -> 460
294 -> 290
295 -> 290
104-> 100
Which did Xavier round incorrectly?
295
What is 849 + 382?
1,231
823 - 578 =
245
The cookie monster ate 456 cookies Monday. He ate 28 fewer on Tuesday. How many did he eat all together?
Monday: 456
Tuesday: 456 - 28 = 428
456 + 428 = 884
884 cookies
What will be the 8th number in this pattern?
1, 2, 4, 8, 16
128