2.1- Estimate Sums and Differences
Estimate the sum or difference.
4,874-2,530= ?
5,000 - 3,000= 2,000
333,447 + 76,451 = ?
409,898
775,075 − 393,904 = ?
381,171
Find the sum or difference. Then check your answer.
630,254 + 281,273 = ?
630,254 + 281,273 = 911,527
You have 1,573 songs in your music lib rary. You download 1,400 more songs. Then you delete 198 songs. How many songs do you have now?
5,673 songs
Estimate the sum or difference.
27,369 + 14,608 = ?
27,000 + 15,000 = 42,000
61,096 + 8,765 = ?
69,861
229,113 − 208,507 = _____
20,606
Find the sum or difference. Then check your answer.
914,562 - 89,034= ?
914,562 - 89,034= 825,528
A baseball team has an attendance of 42,419 on Friday and 44,716 on Saturday. What is the total attendance for the two days?
87,135 people
Estimate the sum or difference.
565,541 − 425,427= ?
565,541 − 425,427= 141,000
566,000 - 425,000 = 141,000
84,318 + 13,591 = _____
97,909
9,330 −2,768 = ?
6,562
Find the sum or difference. Then check your answer.
13,500 − 6,295 = ?
There are 961,939 people in City A and 739,795 people in City B. How many more people are in City A than in City B?
222,144 people
Estimate the sum or difference.
42,783 + 8,395 = ?
42,783 + 8,395 = 51,000
43,000 + 8,000 = 51,000
73,420 + 8,815 = ?
82,235
801,798 - 8,174= ?
793,624
Which statements describe the difference of 21,918 and 19,970? (Hint: 2 should be circled!!!!)
-The difference is about 2,000.
-The difference is 2,000.
-The difference is less than 2,000.
-The difference is greater than 2,000
The difference is about 2,000.
The difference is less than 2,000.
You have 3,626 songs in your music library. You download 4,744 more songs. Then you delete 312 songs. How many songs do you have now?
8,058 songs
Mount Saint Helens is a volcano that is 8,363 feet tall. Mount Fuji is a volcano that is 4,025 feet taller than Mount Saint Helens. About how tall is Mount Fuji?
about 12,000 feet
A football team has an attendance of 82,621 at its first game and 79,903 at its second game. What is the total attendance for the two games?
162,524 people
There have been 137,865 graduates from School A and 387,512 graduates from School B. How many more people have graduated from School B than School A?
249,647 people
Which statements describe the difference of 19,432 and 12,130? (Hint: 2 need to be circled!!!)
-The difference is about 7,000.
-The difference is 7,000.
-The difference is less than 7,000.
-The difference is greater than 7,000.
The difference is about 7,000. The difference is greater than 7,000.
An inventor wants to raise $25,000 to start a project. The first week, he raises $12,415. The second week, he raises $11,592. How much more money does he need to raise?
$993