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a fost răspuns

Efectueaza in doua moduri.

a) 4×(20+3)
(55-25)×4

b) 5×(30+6)
7×(11+8)

c). (100-70)×3
(243-167)×6​

Răspuns :

Corhutgabi

Răspuns:

a) 4×23=92; 4×20+4×3=80+12=92. 55×4-25×4=220-100=120;. 30×4=130. b)5×36=180;. 5×30+5×6=150+30=180. 7×19=133;. 7×11+7×8=77+56=133. c)100×3-70×3=300-210=90; 30×3=90. 243×6-167×6=1458-1002=456; 76×6=456

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