NOMBRE ______________________________ FECHA _______________
ACTIVIDAD
15 + _______________ = 20 | 35 − _______________ = 20 |
50 − _______________ = 20 | _______________ + 5 = 20 |
55 − _______________ = 20 | 10 + _______________ = 20 |
_______________ + 0 = 20 | 45 − _______________ = 20 |
25 − _______________ = 20 | _______________ − 15 = 20 |