Using Compensation
use compensation to solve 48 + 49 =
48 + 50 = 98
98 - 1 = 97
140-30
40-30=10 100+10=110
60
8+5=10+____
3
Ann finds 23 shells. She finds 30 fewer shells than Nate. How many shells does Nate find?
23+30=53
use compensation to solve 327 + 98=
327 + 100= 427
427 - 2 = 425
672 + 10 =
682
How many dimes in one dollar?
10
27+____=57
30
Mrs. Devereux sells 29 chicken sandwiches at her foodtruck. She sells 41 fewer chicken sandwiches than cheeseburgers. How many cheeseburgers does she sell?
29+41=70 cheeseburgers
278 + 498 =
278 + 500 =778
778 - 2 = 776
734 - 100
634
How many hours in a day?
24
200+_____=100+100+40
40
A truck was carrying 64 boxes of fruit. It delivered 12 boxes to one store. How many boxes were left on the truck?
52 boxes
695 - 190 =
695 - 200 = 495
495 + 10 = 505
795-390
400-390=10 395+10=495
How many quarter would you need to make $1.50
6
682+_____+ 10=892
200
Jax read 28 pages before lunch. He read 33 more pages after lunch than he read before lunch. How many pages did he read after lunch?
61 pages
744 - 297 =
744 - 300= 444
444+3 = 447
843 - 380 =
443 + 400
400 - 380 =20
443 + 20 = 463
If the hour hand is on the 3 and the minute hand is on the 1, what time is it?
3:05
950-610 = 100 +_____
240
Students and teachers from OES went on a field trip. 121 students went on the trip. 93 fewer teachers went on the trip. How many teachers went?
28 teachers