Question

Scoateti factorul comun in afara parantezelor, apoi calculati: a) 35*43+35*57; b) 24*37-24*32; 721*240+760*721; 692*453-433*692; c) 4*35+4*52+4*13; d) 12*91-12*44-12*17; 9*15+15*6+6*15; 113*58-15*113-113*43; e) 33*44+55*33-33*99; 27*51+51*34-60*51;

Answer 1

a)35×(43+57)=35×100=3500.
b)24×(37-32)=24×5=120;
721×(240+760)=721×1000=721000;
692(453-433)=692×20=13840.
c)4×(35+52+13)=4×100=400.
d)12×(91-44-17)=12×30=360;
15×(9+6+6)=15×21=315;
113×(58-15-43)=113×0=0.
e)33×(44+55-99)=33×0=0;
51×(27+34-60)=51×1=51




vreau coroanaaaaaaa