rounding
addition
subtraction
100

what is 234 rounded to the nearest hundred 

200

100

34+17=?

51

100

7-7

0

200

5,600 rounded to the nearest hundred

5,700

200

50+52=?

102

200

56-52

54

300

8,567 rounded to the nearest thousand

9,000

300

345+54=?

399

300

567-7

560

400

28,567 rounded to the nearest ten thousand.

30,000

400

5,666+56=?

5,722

400

4,569-78

4,491

500

456,684,990 rounded to the nearest thousand.

456,685,000

500

456,000+678=?

456,678

500

45678-90

45,588