Rounding
Addition
Subtraction
Word Problems
Reasonable?
100
Round 689 to the tens.
690
100
8,999 + 2,387
11,386
100
879,989 - 21,070
858,919
100
Jason has $21,056 in his bank account. He deposited a check of $3,989 yesterday. What is Jason total in his bank account? *Don't forget to label your answer!
$25,045 in his bank account
100
Is 28,900 reasonable to 30,000 if rounded to the thousands?
NO
200
Round 2,781 to the thousands.
3,000
200
20,385 + 11,386
31,771
200
500,989 - 242,000
258,989
200
The Chicago Library had 124,061 books checked out. Of those books, 31,117 were sports fiction books. How many of the checked out books were not sports fiction books? *Don't forget to label your answer!
92,944 books were not sports fiction.
200
Is 12,000 and 12,308 reasonable if rounded to the thousands?
YES
300
Round 245,100 ten-thousands.
250,000
300
721,492 + 158,497
879,989
300
279,389 - 191,492
87,897
300
Lily had 45,091 marbles. Joey had 2,345 more marbles than Lily. How many total marbles do they have together? *Don't forget to label your answer!
92,527 total marbles.
300
Is 123,798 and 140,000 reasonable if rounded to the hundred-thousands?
YES
400
Round 92,999 to the ten-thousands.
90,000
400
What is the estimate of 8,999 + 2,387 if rounded to the thousands?
11,000
400
600,000 - 345,913
245,087
400
John's Fantasy Football team lasted for 3 months. His total points for Fantasy Football was 45,076. In the first month he had 20,001 points and 12,873 points in the second month. How many points did John have in the third month? *Don't forget to label your answer!
12,202 points in the third month
400
To what place value would you round 19,000 and 19,190 to make the numbers reasonable?
thousands place
500
Round 289,601 to the thousands.
290,000
500
What is the estimate of 54,231 + 19,711 if rounded to the ten-thousands?
70,000
500
1,000,000 - 34,750
965,250
500
A local store was having a sale on notebooks Monday, Tuesday, and Wednesday. The store started the sale with a total of 36,000 notebooks. On Monday the store sold 7,424 notebooks. On Tuesday the store sold 8,967 notebooks. How many notebooks did the store sell on Wednesday? *Don't forget to label your answer!
19,609 notebooks were sold Wednesday.
500
To what place value would you round 40,699 and 40,000 to make the numbers reasonable?
Ten-thousands place
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