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tot ex 218 coroana si ma abonez​

Tot Ex 218 Coroana Si Ma Abonez class=

Răspuns :

Răspuns:

2×248=2×(200+40+8)=2×200+2×40+3×8=400+80+24=504

Explicație pas cu pas:

4×232=4×(200+30+2)=4×200+4×30+4×2=800+120+8=928 7×137=7×(100+30+7)=7×200×7×30+7×7=700+210+49=959 6×164=6×(100+60+4)=6×100+6×60+6×4=600+360+24=984 8×107=8×(100+7)=8×100+8×7=800+56=856 3×308=3×(300+8)=3×300+3×8=900+24=924