1.
181 + 278 =
2
459
|
2.
521 + 78 =
2
599
|
3.
155 – 21 =
2
134
|
4.
820 + 178 =
998
2
|
5.
835 + 4 =
2
839
|
6.
640 – 33 =
2
607
|
7.
472 + 459 =
931
2
|
8.
648 – 284 =
2
364
|
9.
251 – 234 =
2
17
|
10.
143 – 129 =
14
1
|
11.
952 + 43 =
995
2
|
12.
719 + 66 =
785
2
|
13.
579 + 390 =
2
969
|
14.
926 + 53 =
979
2
|
15.
960 – 181 =
2
779
|
16.
691 – 464 =
227
2
|
17.
807 + 53 =
2
860
|
18.
167 – 72 =
95
2
|
19.
845 – 637 =
2
208
|
20.
478 + 86 =
564
2
|
1.
181 + 278 =
2
459
|
2.
521 + 78 =
2
599
|
3.
155 – 21 =
2
134
|
4.
820 + 178 =
998
2
|
5.
835 + 4 =
2
839
|
6.
640 – 33 =
2
607
|
7.
472 + 459 =
931
2
|
8.
648 – 284 =
2
364
|
9.
251 – 234 =
2
17
|
10.
143 – 129 =
14
1
|
11.
952 + 43 =
995
2
|
12.
719 + 66 =
785
2
|
13.
579 + 390 =
2
969
|
14.
926 + 53 =
979
2
|
15.
960 – 181 =
2
779
|
16.
691 – 464 =
227
2
|
17.
807 + 53 =
2
860
|
18.
167 – 72 =
95
2
|
19.
845 – 637 =
2
208
|
20.
478 + 86 =
564
2
|