Mình sửa lại đề câu a:
325x6+560x6+115x6
= 6 x (325 + 560 + 115)
= 6 x 1000
= 6000
b) 159 + (175 - 159) + 25
= 159 + 175 - 159 + 25
= (159 - 159) + (175 + 25)
= 200
c) 1083 - (1083 - 859) + 141
= 1083 - 1083 + 859 + 141
= (1083 - 1083) + (859 + 141)
= 1000
Chúc bạn học tốt!
a) \(325\cdot6+560\cdot6+115\cdot6\)
\(=\left(325+560+115\right)\cdot6\)
\(=1000\cdot6\)
\(=6000\)
b) \(159+\left(175-159\right)+25\)
\(=159+175-159+25\)
\(=\left(159-159\right)+\left(175+25\right)\)
\(=200\)
c) \(1083-\left(1083-859\right)+141\)
\(=1083-1083+859+141\)
\(=\left(1083-1083\right)+\left(859+141\right)\)
\(=1000\)
