
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.


a= 257 x (87+23)
=257 x 100
=25700
b=712 x (25+74)+752
=75200
c=94100
Chuẩn luôn rồi
Học tốt

bạn cứ nhóm số sao cho số tròn và đẹp nhé:
364+257+136+243
=(364+136)+(257+243)
=500+500
=1000

\(108\times5+108\times96-108=108\times\left(5+96-1\right)\)
\(=108\times100=10800\)

25 x 12 x 30 x 4 = (25 x 4) x (12 x 30)
= 100 x 360
= 36000
25 x 12 x 30 x 4 = ( 25 x 4 x 10 ) x 12 x 3
= 1000 x 36
= 36 000

\(2,5x7,8x4\)
\(=\left(2,5x4\right)x7,8\)
\(=10x7,8\)
\(=78\)
Chúc bạn học tốt !!!


8x427x3+6x573x4
=24x427+24x573
= 24x( 427+573)
=24x 1000
=24000

122075 : 257 - 70675 : 257
= ( 122075 - 70675 ) : 257
= 51400 : 257
= 200
HT
TL
=200 Nha