Estimate by rounding to the nearest ten. Show your problem and your answer!
6, 324 + 3, 842
What is 6,320 + 3,840 = 10, 160
400
7,845 + 509 + 3,746
What is 12,100?
400
8,327 - 3,796
What is 4,531?
400
10,807 - 4,373
What is 6,434?
400
(40 + 6) - 3
What is 43?
500
This year, 35,694 people ran in a marathon.
Last year, 8,889 fewer people ran in the marathon.
About how many people ran in last year's marathon?
What is about 27, 000 people?
500
There were 10,453 items checked out at the library one week.
The next week, there were 12,975 items checked out.
The third week, there were 9,634 items checked out.
How many items were checked out in three weeks' time?
What is 33, 062
500
A crayon company makes 17, 491 green crayons and 15,063 blue crayons. How may more green crayons are made than blue crayons?
What is 2,428 more green crayons?
500
Kalin scored 10, 830 points on a video game. Karina scored 9,645 points. How many more points did Kalin score than Karina?