Question

1, Tính nhanh

A, 325×6+5600×6+115×6

B, 159+(175-159)+25

C, 1083-(1083-859)+141

Answer 1

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! 

Answer 2

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) \(1083-\left(1083-859\right)+141\)

\(=1083-1083+859+141\)

\(=\left(1083-1083\right)+\left(859+141\right)\)

\(=1000\)