Add It Up
What is 3,250 + 1,420?
4,670
What is 4,500 – 2,250?
2,250
Lily has 2,300 stickers. She buys 1,200 more. How many does she have now?
3,500 stickers
Estimate the sum: 3,245 + 1,789
≈5,000 (3,000 + 2,000)
What is 3,000 + 2,000 – 1,000?
4,000
What is 12,385 + 7,610?
19,995
What is 10,000 – 4,755?
5,245
A train traveled 14,500 km in one week and 13,300 km the next. What’s the total distance?
27,800 km
Estimate the difference: 9,845 – 2,478
≈7,000 (10,000 – 3,000)
A bakery made 12,000 cookies. They sold 4,500. How many cookies are left?
7,500
What is 25,487 + 36,213?
61,700
What is 38,450 – 17,835?
20,615
A factory produced 38,000 toys last month. This month, it produced 9,500 fewer. How many did it make this month?
28,500 toys
Estimate: 22,678 + 35,421
≈60,000 (23,000 + 35,000)
What number must be added to 46,325 to make 70,000?
23,675
What is 46,859 + 29,134?
75,993
What is 84,327 – 28,496?
55,831
A library had 62,750 books. After a donation of 13,245 more books, how many does it have now?
75,995 books
Estimate the sum: 47,912 + 14,289
≈62,000 (48,000 + 14,000)
A school has 35,672 books. 14,235 are fiction, and the rest are nonfiction. How many are nonfiction?
21,437
What is 73,928 + 18,746?
92,674
What is 95,004 – 39,678?
55,326
A store had 78,950 cans in stock. It sold 46,843. How many cans are left?
32,107 cans
Estimate the difference: 99,867 – 48,432
≈51,000 (100,000 – 49,000)
A farmer harvested 48,326 apples. He sold 27,914 and used 5,000 for juice. How many are left?
15,412