Add It Up
3,674 + 4,369=
8,043
8,715 - 5,923=
2,792
At a tire factory, 3,166 tires were made on Thursday and 2,941 tires were made on Friday. How many tires were made on Thursday and Friday in all?
6,107 tires
Estimate the sum:
About how much is 12,421 + 9,765?
12,000 + 10,000 = 22,000
or
10,000 + 10,000 = 20,000
A range of 20,000 to 22,000
Round 25,196 to the nearest thousand
25,000
6,000 + 3,173=
9,173
6000-2,173=
3,827
Sara scored 2,293 points in a video game. That was 1,536 more than Elvin's score on the same game. How many points did Elvin score?
757 points
Estimate the difference:
About how much is 28,432 - 4,234?
28,000 - 4,000 = 24000
or
28,400 - 4,200 = 24,200
Range of 24,000 to 24,200
Write in standard form: 50,000 + 80 + 3
50,083
5,215 + 3,107=
8,322
9,534 - 4,085=
5,449
There are 11,500 seats in the basketball arena. For one game, 9,465 seats were filled. How many seats were empty?
2,035 seats were empty
Estimate the sum:
About how much is 5,678 + 9,245?
6,000 + 9,000 = 15,000
or 5,600 + 9,200 = 14,800
A range of 14,800 to 15,000
Use partial sums to solve:
356 + 25
356 + 25 = 300 + 70 + 11 = 381
43,674 + 3,372=
47,046
18,143 - 5,923=
12,220
Two years ago, Bob bought a used car that had 14,854 miles on the odometer. Last year, he drove 8,240 miles. This year, he drove 9,273 miles. How many miles does the odometer show now?
32,367 miles
Estimate the difference
About how much is 11,526 - 3,780?
12,000 - 4,000 = 8,000
or
11,500 - 3,800 = 7700
Range of 7,700 to 8,000
Use <,>,=
237,325 _____ 237,352
237,325 < 237,352
2,869 + 25,946=
28,815
The difference in 8,125 and 15,219
7,094
George bought a car for $17,067. This price included a leather package for $1,248 and a heated seats for $269. What was the price of the car without these features?
$15,550
The library has 1,235 nonfiction books from the librray and 452 fiction books. About how many nonfiction and fiction books does the library have?
1,000 + 450 = 1450 books
or
1,200 + 500 = 1,700 books
or a range of 1,450 to 1,700
Write in standard form:
eight hundred nine thousand, sixty-two
809,062