Round It!
Round 745 to the nearest hundred.
700
Estimate 454 + 223 by rounding each number to the nearest ten.
450 + 220 = 670
368 + 247 = ?
615
Solve 5,823 − 4,191. Check using addition.
1,632
Check: 4,191 + 1,632 = 5,823
Fill in the blank with <, >, or =:
615 ___ 635
615 < 635
Round 454 to the nearest ten.
450
Estimate 745 − 312 by rounding each number to the nearest hundred.
700 − 300 = 400
2,647 + 3,185 = ?
5,832
Solve 52,887 − 18,236. Check using addition.
34,651
Check: 18,236 + 34,651 = 52,887
Order from least to greatest:
454, 449, 443, 457
443, 449, 454, 457
Round 3,642 to the nearest thousand.
4,000
Estimate, then solve: 2,830 + 3,324.
First, round each number to the nearest thousand to estimate. Then find the exact answer.
Estimate: 3,000 + 3,000 = 6,000
Exact answer: 2,830 + 3,324 = 6,154
5,869 + 2,746 = ?
8,615
Solve 800 − 549. Check using addition.
251
Check: 549 + 251 = 800
There were 2,088 alligators at Everglades Alligator Farm. More alligators hatched from eggs. Now there are 2,200 alligators.
How many baby alligators hatched from eggs?
112 baby alligators
2,200 − 2,088 = 112
2,088 + 112 = 2,200
Round 7,478 to the nearest hundred.
7,500
Estimate, then solve: 5,823 − 4,191.
First, round each number to the nearest thousand to estimate. Then find the exact answer.
Estimate: 6,000 − 4,000 = 2,000
Exact answer: 5,823 − 4,191 = 1,632
14,678 + 8,957 = ?
23,635
Solve 9,000 − 4,213. Check using addition.
4,787
Check: 4,213 + 4,787 = 9,000
Order from least to greatest:
753, 7,478, 7,492, 745
745, 753, 7,478, 7,492
Round 5,823 to the nearest ten, nearest hundred, and nearest thousand.
Ten: 5,820
Hundred: 5,800
Thousand: 6,000
Estimate, then solve: 29,228 + 32,235.
First, round each number to the nearest thousand to estimate. Then find the exact answer.
Estimate: 29,000 + 32,000 = 61,000
Exact answer: 29,228 + 32,235 = 61,463
38,756 + 24,687 = ?
63,443
Solve 30,002 − 16,785. Check using addition.
13,217
Check: 16,785 + 13,217 = 30,002
The DeWitt family will drive a total of 1,436 miles on their vacation. They have already driven 745 miles.
How many more miles does the DeWitt family still have to drive?
691 miles
1,436 − 745 = 691