|
1.
107 + 90 =
2
197
|
2.
999 + 10 =
1009
2
|
3.
981 – 90 =
891
2
|
4.
939 + 60 =
999
2
|
|
5.
819 – 100 =
2
719
|
6.
391 – 70 =
321
2
|
7.
761 + 10 =
771
2
|
8.
533 + 80 =
2
613
|
|
9.
894 + 80 =
974
2
|
10.
599 + 100 =
2
699
|
11.
529 + 10 =
2
539
|
12.
536 – 50 =
2
486
|
|
13.
215 – 20 =
195
2
|
14.
354 – 20 =
334
2
|
15.
503 – 80 =
423
2
|
16.
729 – 50 =
679
2
|
|
17.
219 – 50 =
2
169
|
18.
151 + 50 =
201
2
|
19.
796 + 60 =
856
2
|
20.
671 – 10 =
2
661
|
|
1.
107 + 90 =
2
197
|
2.
999 + 10 =
1009
2
|
3.
981 – 90 =
891
2
|
4.
939 + 60 =
999
2
|
|
5.
819 – 100 =
2
719
|
6.
391 – 70 =
321
2
|
7.
761 + 10 =
771
2
|
8.
533 + 80 =
2
613
|
|
9.
894 + 80 =
974
2
|
10.
599 + 100 =
2
699
|
11.
529 + 10 =
2
539
|
12.
536 – 50 =
2
486
|
|
13.
215 – 20 =
195
2
|
14.
354 – 20 =
334
2
|
15.
503 – 80 =
423
2
|
16.
729 – 50 =
679
2
|
|
17.
219 – 50 =
2
169
|
18.
151 + 50 =
201
2
|
19.
796 + 60 =
856
2
|
20.
671 – 10 =
2
661
|