![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
75x3+75x4+75x2+75
= 75x3 + 75x4 + 75x2 + 75x1
= 75x(3+4+2+1)
=75 x 10
= 750
![](https://rs.olm.vn/images/avt/0.png?1311)
\(75\times34+75+65\times75\)
\(=75\times\left(1+34+65\right)\)
\(=75\times\left(35+65\right)\)
\(=75\times100\)
\(=7500\)
![](https://rs.olm.vn/images/avt/0.png?1311)
= 25 x 25 + 25 x 75 = 25x (25 + 75) = 25 x 100 = 2500
![](https://rs.olm.vn/images/avt/0.png?1311)
b1:
42 x 2/5 + 2/5 x 56 - 2/5
=2/5 x (45 +56-1)
=2/5 x 100
=40
b2:
tổng 2 số là:75 x 2=150
vô lý
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 75 x 75 + 75 x 24 + 75
= 75 x ( 75 + 24 + 1 )
= 75 x 100
= 7500
b, 25 × 25 + 25 × 25 + 25 × 25 + 25 × 24 + 25
= 25 x ( 25 + 25 + 25 + 24 + 1 )
= 25 x 100
= 2500
c, 125 x 4 x 25 x 8
= ( 125 x 8 ) x ( 4 x 25 )
= 1000 x 100
= 100000
a) = 75 x (75+24+1)
=75 x 100
=7500
b) =25 x (25+25+25+24+25)
= 25 x 124
= 3100
c) = (125 x 8) x (25 x 4)
=1000 x 100
=100000
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Sao ma de vay troi ! Ne :
98 * 75 + 75 + 75= 98 * 75 + 75 *1 + 75 * 1= 75 *( 1+1+98)= 75 * 100 = 7500
Vay thui !
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
75x2+75x9-75
= 75x2+75x9-75.1
= 75 . ( 2+9 -1)
= 75 . 10
= 750
75 x 2 + 75 x 9 - 75
= 75 x (2 + 9 - 1)
= 75 x 10
= 750