Răspuns:
1) 3·(54+126)=3·180=540
3·54+3·126=540
(65-36)·2=29·2=58
65·2-36·2=58
2) 65·5·2·4=(65·4)·(5·2)=2600
3) [(250·2+3·109)]-100·4=(500+327)-400=827-400=427
4) cate lalele sunt?
4·13=52
cate narcise sunt?
4·17=68
cate flori sunt in total?
52+68=120
mod 2 sub forma de ex.- (4·17)+(4·13)=120 flori
