1.
489 – 40 =
2
449
|
2.
209 + 10 =
219
2
|
3.
650 + 60 =
710
2
|
4.
278 + 50 =
2
328
|
5.
533 + 80 =
2
613
|
6.
700 – 50 =
650
2
|
7.
499 – 100 =
2
399
|
8.
932 – 20 =
2
912
|
9.
696 – 70 =
626
2
|
10.
154 – 30 =
2
124
|
11.
174 – 70 =
104
2
|
12.
406 + 100 =
2
506
|
13.
682 – 30 =
652
2
|
14.
588 + 60 =
648
2
|
15.
153 – 40 =
113
2
|
16.
309 + 30 =
2
339
|
17.
389 + 50 =
439
2
|
18.
157 – 80 =
77
2
|
19.
914 + 20 =
934
2
|
20.
842 – 40 =
2
802
|
1.
489 – 40 =
2
449
|
2.
209 + 10 =
219
2
|
3.
650 + 60 =
710
2
|
4.
278 + 50 =
2
328
|
5.
533 + 80 =
2
613
|
6.
700 – 50 =
650
2
|
7.
499 – 100 =
2
399
|
8.
932 – 20 =
2
912
|
9.
696 – 70 =
626
2
|
10.
154 – 30 =
2
124
|
11.
174 – 70 =
104
2
|
12.
406 + 100 =
2
506
|
13.
682 – 30 =
652
2
|
14.
588 + 60 =
648
2
|
15.
153 – 40 =
113
2
|
16.
309 + 30 =
2
339
|
17.
389 + 50 =
439
2
|
18.
157 – 80 =
77
2
|
19.
914 + 20 =
934
2
|
20.
842 – 40 =
2
802
|