23/01/2017

CORREGIMOS LAS CUENTAS
SUMAS
743+654=1397               260+588=848
75+225=300                 751+809=1560
452+87=539                 612+408=1020
303+589=892                920+695=1615
219+416=635                46+564=610
351+609=960                714+471=1185
191+749=940                357+721=1078
924+616=1540                83+426=509
RESTAS
33-2=31        98-66=30            54-50=04
82-31=51     25-15=10             17-06=11
39-25=14      46-14=32             68-68=0
55-04=51      97-90=7                 70-30=40
91-10=81      73-23=50             54-02=52
29-29=0        70-20=50              84-71=13
56-22=34        98-51=47          35-30=5
18-6=12         27-17=10          41-30=11
19-15=4         53-12=41           42-12=30