Răspuns:
1)175 912 >99604
803256>803 526
192 812=192 812
2) mii,zeci de mii,sute de mii
146 312_146000;150000;100000
202900_203000;200000;200000
429 965_430000;430000;400000
3)(546912+74756)-452800=
621668-452800=168868
4)900000-(743111-296356)=
900000-446755=453245
5)18224:68=268....
65914:23=2865,....
6)a+b+c=2965
aplicăm mersul invers
/____/____/____/____/al treilea
/____/____/al doilea
/____/primul
2965:5=593 un segment
a=593
b=593×2
c=593×4
7)2c___3a____129lei. (1)
3c____4a____176lei
dacă le scădem
1c_____1a____47lei /×2
2c____2a____94lei
scădem din (1)
1atlas=129-94=32lei
1carte=47-32=15lei
