Find the Sum (+)
Estimate to find the sum of 22 + 58.
A. 80
B. 70
A. 80
Estimate to find the difference:
83 - 69
A. 10
B. 20
A. 10
As a firefighter, Aiden has helped put out 35 fires in his own city and 12 in a nearby city. About how many fires has he helped put out? Choose the better estimate.
A. 50
B. 70
A. 50
A team of engineers built a dam over a large river. In the process, they created a lake covering farmland and forest. The lake covers a total of 88 hectares. If the lake covers 37 hectares of farmland, about how many hectares of forest does it cover? Choose the better estimate.
A. 50
B. 20
A. 50
Estimate to find the sum of 45 + 38.
A. 83
B. 80
C. 85
D. 90
D. 90
Estimate to find the difference:
53 - 22
A. 20
B. 70
C. 30
D. 40
C. 30
Last Saturday, Dave and his friends had a huge snowball fight. During the fight, 48 of the snowballs hit their targets, but 91 of them missed. About how many snowballs were thrown?
A. 90
B. 140
C. 50
D. 139
B. 140
Since he was hired, a chef has served a total of 67 guests. Of those guests, 19 were adults. About how many children has the chef served?
A. 40
B. 90
C. 50
D. 80
C. 50
Estimate to find the sum of 318 + 114.
400
Estimate to find the difference:
813 - 339
500
Chase works in the kitchen of a Mexican restaurant. Over the weekend, he washed 37 small plates and 58 large plates. About how many plates did he wash over the weekend?
100
There were a total of 97 books sitting on a bookcase in Anna's bedroom, until she sold 65 of them. About how many books are left on the bookcase?
30
Estimate to find the sum of 440 + 250.
700
Estimate to find the difference:
568 - 402
200
Jennifer works for a moving company and had to move 650 pounds of her customer's belongings in small boxes and 220 pounds in large boxes. In total, about how many pounds did Jennifer pack in the boxes?
900
Anna wrote a total of 896 songs in her career. Of these songs, 407 were popular. About how many songs did Anna write that were not popular?
500
Estimate to find the sum of 450 + 750.
1300
Estimate to find the difference:
841 - 50
700
Harold jumped on the couch 703 times, and his friend Tyler jumped on it 250 times. Then, the couch broke and they both got in big trouble. About how many times did they jump on the couch in total?
1,000
Sasha had $650 invested in the stock market until she lost $210 on those investments. About how much money does she have in the stock market now?
$500