Rounding
54 rounded to the nearest 10
50
89 - 72
17
600 - 204
396
Skylar raised $345 walking dogs. Lana raised $245 walking dogs. How much more money did Skylar raise then Lana?
Round to the greatest place value then subtract.
34 - 23
10
834 rounded to the nearest hundred
800
823 - 115
708
500 - 382
118
Matt brought in 389 Pokemon cards. Reme brought in 243 Pokemon cards. About how many more cards does Matt have?
Estimate 150 (nearest 10)
Round to the greatest place value then subtract.
743 - 249
500
982 rounded to the nearest ten
980
1,348 - 1,259
89
1,021 - 340
681
Mrs. Bailey's class collected 1,329 cans of food for a food drive. Mrs. Burns' class collected 1,154 cans. How many more cans did Mrs. Bailey's class collect?
Exact 175
Round to the greatest place value then subtract.
738 - 67
630
1,282 rounded to the nearest hundred
1,300
219 - 132
87
800 - 637
163
Gabe read for 135 minutes during the week. Dewey read for 232 minutes during the same week. About how many more minutes did Dewey read than Gabe?
Estimate 90 (nearest 10)
Round to the nearest ten, then subtract.
378 - 264
120
2,276 rounded to the nearest ten
2,280
1,267 - 1,256
11
200 - 174
26
Jason scored 1,238 points on his video game. Bryson scored 1,453 points on his video game. How many more points did Bryson score?
Exact 215
Round to the nearest hundred, then subtract.
6,283 - 3,596
2,700