25*4*100*25*4*45*45*25*2
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)
\(\frac{1}{4}\cdot45+0.25\cdot35+\frac{25}{100}\cdot19+25\%\)
\(=0.25\cdot45+0.25\cdot35+0.25\cdot19+0.25\)
\(=0.25\left(45+35+19+1\right)\)
\(=0.25\cdot100\)
\(=25\)
\(=0,25.45+0,25.35+0,25.19+0,25.1\)
\(=0,25.\left(45+35+19+1\right)\)
\(=0,25.100\)
\(=25\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 125 x 45 + 45 x 25 + 90 x 25
=125 x 45 + 45 x 25 + 2 x 45 x 25
=45 x [125 + 25 + ( 2 x 25 )]
=45 x [125 + 25 + 50]
=45 x 200
= 9000
c) 25 x 20 x 4 - 200 x 40
=25 x 2 x 10 x 4 - 200 x 40
=(25 x 2 x 4) x 10 - 200 x 40
=200 x 10 - 200 x 40
=200 x (10 - 40)
=200 x (-30)
= -6000
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 225 - ( -45 ) - 100
=225+45-100
=270-100
=170
b) | - 25 | + | 25 | - ( - 50 )
=25+25+50
=50+50
=100
c) 25 - 5. [( -4 )2 + 4 ] . ( -1)5
=25-5.[(-16)+4].(-5)
=25-5.(-12).(-5)
=25-(-60).(-5)
=25-300
=-275
tick nha
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{1}{4}\times45+0,25\times35+\frac{25}{100}\times19+25\%\)
\(=0,25\times45+0,25\times35+0,25\times19+0,25\times1\)
\(=0,25\times\left(45+35+19+1\right)\)
\(=0,25\times100\)
\(=25\)
lần sau bn vt dấu các phép tính ra nha, vt như nay khó đọc lắm ak
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
25 + 25 + 25 + 25 + 25 + 25 +25 + 25=25x8=200
45 + 45 + 45 + 45 + 15 + 15 + 15 + 15=(45x4)+(15x4)=180+60=240
damned
damned