Question

Vă rog ex 3 Dau coroana

Answer 1

Răspuns

Explicație pas cu pas:

9×140 + 9×517=1260 + 4653=5913  sau

9×140 + 9×517= 9×(140+517)=9×657=5913

15×68+76×15=1020+1140=2160  sau

15×68+76×15=15×(68+76)=15×144=2160

730×6 - 6×219=4380 - 1314=3066   sau

730×6 - 6×219=6×(730-219)=6×511=3066

18×59 - 18×43=1062 - 774=288   sau

18×59 - 18×43=18×(59-43)=18×16=288

Answer 2

9×140 + 9 × 517 =
1260+4653= 5913
9(140+517) =
9× 657= 5913
15×68+76×15=
1020+1140=2160
15( 68+76)=
15× 144= 2160
730