c1:=476x100
=47600
c2:=476x45+55
=21420+55
=21475
nhớ k đúng nha
476 x ( 45 + 55 ) 476 x ( 45 + 55 )
= 476 x 100 = 476 X 45 + 476 x 55
= 47600 = 21420 + 26180
= 47600
chúc bn học tốt
Cách 1 : Tính như thường
Cách 2 : Sử dụng tính chất phân phối của phép nhân đối với phép cộng : a x c + b x c = ( a + b ) . c
1000 +1000 +2000+2000+3000+3000+4000+4000+5000+1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000+90000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
