Question

tính

a, 16.(27+15)+8.(53+25):2

b, 53.(51+4)+53.53.(49+96)+53

c,158+445+555

d,125.98.2.8.25

e,7+10+13+16+19+22+25

Answer 1

a, 16.(27+15)+8.(53+25):2

= 4.[(27+15).4] + 4.(53+25)

= 4.168 + 4.312

= 4.(168+312)

= 4.480=1920.

...

Answer 2

Câu b tình bt thui!

b, 53.(51+4)+53.53.(49+96)+53

=53.55+53.53.145+53

=2915+407305+53

=410220+53=410273

Answer 3

d,125.98.2.8.25

= 25.2.2.98.2.2.2.2.25.

= [(25.2.2.2)+(25.2.2.2)].98.

= (200 + 200).98.

= 400 . 98 = 39200.

Answer 4

câu hỏi lớp 6 đấy các bn ạ

Answer 5

giúp mk voi cac bn