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29+29+......+29+83+...+83
=29.17+83.29
=29(17+83)
=29.100
=2900
tick bạn
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(83\times14+27\times17+83\times13\)
\(=83\times\left(14+13\right)+27\times17\)
\(=83\times27+27\times17\)
\(=\left(83+17\right)\times27\)
\(=100\times27\)
\(=2700\)
Chúc bạn học tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
17*25 + 17*32 + 83*25 + 83*32
= 17*(25 + 32) + 83*(25 + 32)
= (25 + 32)(17 + 83)
= 57*100
= 5700
\(17.25+17.32+83.25+83.32\)
\(=17.\left(25+32\right)+83.\left(25+32\right)\)
\(=\left(25+32\right)\left(17+83\right)\)
\(=57.100\)
\(=5700\)
![](https://rs.olm.vn/images/avt/0.png?1311)
A=17x32+64x83+36x83+68x17
A=17x32+17x68+64x83+36x83
A=17x(32+68)+83x(64+36)
A=17x100+83x100
A=100x(83+17)
A=100x100
A=10000
![](https://rs.olm.vn/images/avt/0.png?1311)
A=17.32+64.83+36.83+68.17
=>17.(32+68)+83.(64+36)
=>17.100+83.100
=>100.(17+83)
=>100.100
=>10000
Học tốt~
2347.83 + 2346.17 - 83
= (2346 + 1).83 + 2346.17 - 83
= 2346.83 + 83 + 2346.17 - 83
= 2346.(83 + 17) + (83 - 83)
= 2346.100 + 0
= 234600
ta có : \(2347.83+2346.17-83\)
\(=\left(2347.83-83\right)+2346.17\)
\(=83.2346+2346.17\)
\(=2346.\left(83+17\right)\)
\(=2346.100\)
\(=234600\)