Find the Sum or Difference
555 + 621 =
1176
310 + 592 =
902
The population of a village was 5,674 five years ago. Today the population of the village is 7,155. How much did the population grow in these five years? Solution Estimate to nearest hundred
7155 - 5674 = 1481
Estimated to nearest 100
7155 = 7200
5674 = 5700 7200 - 5700 = 1500
Round to the nearest 1000
2385
2000
Ted counted 24 bricks in the basement. His mother had 50 more outside. How many bricks did they have in all?
24 + 50 = 74 bricks
198 + 323 +
521
703 -242 =
461
The attendance at last week’s high school football game was 3,488. The attendance for this week’s game was 4,167. How many people attended both games combined?
3488 + 4167 = 7655
Round to nearest 1000
7192
7000
Lisa took 41 photos for a science project. She decided that 6 of them were too blurry to use for her project. How many photos was she able to use for her project?
41- 6 = 35 photos
732 - 345 =
387
9786 - 5481 =
4305
Jason and Miguel each bowl one game. Jason scores 218 points and Miguel scores 179 points. How many more points did Jason score than Miguel?
218 - 179 = 39
Round to nearest 100
6983
7000
47 - 19 =
28
557 - 486 =
1043
5681 + 3647 =
9328
3217 + 5762 =
8979
Round to nearest 100
1464
1500
58 + 25 =
83
Jason and Miguel are on a bowling team together. In their last game, Jason scored 178 points and Miguel scored 205 points. What was their total score?
178 + 205 = 383
Write an additiona/subtraction sentence to match problem. Estimate to the nearest ten
You and some friends want to watch two movies. The first movie is 135 minutes long. The second movie is 183 minutes long. How many minutes would yuo be watching movies if you watched both?
Solution:
135 + 183 = 318 minutes
Estimated to the nearest 10
135 = 140
183 = 180 140 + 180 = 320
8250 - 2775 =
5475
Round 9013 to the nearest 100
9000
71 - 62 =
9