Sumar.
1 a. |
______ + 80 + 50 + 10 = 170
|
|
1 b. |
_________ + 60 + 60 + 70 = 280
|
|
2 a. |
80 + 90 + 60 + ______ = 270
|
|
2 b. |
30 + ______ + 20 + 80 = 140
|
|
3 a. |
_________ + 90 + 60 + 90 = 330
|
|
3 b. |
20 + 80 + 80 + ______ = 260
|
|
4 a. |
80 + ______ + 10 + 30 = 140
|
|
4 b. |
70 + ______ + 90 + 80 = 320
|
|
5 a. |
80 + 70 + 90 + ______ = 290
|
|
5 b. |
______ + 10 + 30 + 90 = 190
|
|
6 a. |
60 + 70 + 70 + ______ = 220
|
|
6 b. |
20 + 10 + ______ + 50 = 170
|
|
7 a. |
______ + 20 + 40 + 20 = 100
|
|
7 b. |
60 + 80 + ______ + 40 = 220
|
|
8 a. |
20 + 40 + ______ + 60 = 160
|
|
8 b. |
______ + 10 + 30 + 40 = 100
|
|