125*98-125*46-52*25

=125*(98-46)-52*25

=125*52-52*25

=52*(125-25)

=52*100

=5200

tick nha Namiko

= 5200 ạ, mong đc k

27.121-87.27+73.34

= 27( 121-87) +73.34

= 27.         34 +73.34

= 34( 27+73 )

= 34. 100

= 3400

27. 121 - 87. 27+ 73. 34

= 27 . (121 - 87 ) + 73. 34

= 27 . 34 + 73 .34

= 34 . ( 27 + 73 )

= 34 . 100 =  3400

48 × 19 + 48 × 115 + 134 × 52

= 48 × ( 19 + 115 ) + 134 × 52

= 48 × 134 + 134 × 52

= 134 × ( 48 + 52 )

= 134 × 100

= 13400

48 * 19 + 48 * 115 + 134 * 52

= 48 * ( 19 + 115 ) + 134 * 52 

=48* 134 + 134 * 52

= 134 * ( 48 + 52 ) 

= 134 x 100

= 13 400 

^^ Học tốt nha!

Mấy câu sau cứ lm tương tự zậy! :v  

48 x 19 + 48 x 115 + 134 x 52

= 48 x ( 19 + 115 ) + 134 x 52

= 48 x 134 + 134 x 52

= 134 x ( 48 + 52 )

= 134 x 100

= 134 00

52000 tick minh nha help me plaseeeeeeeeeee.......!!!!

= ( 45x971 +39x971) + 84x29

= 971x(45 +39) + 84x29

=971x 84 + 84x29

=84x(971+29)

=84x1000

=84000

45x971+39x971+84x29=971x(45+39)+84x29

                                 = 971x84+84x29

                                = 84x(971+29)

                               =84x1000

                                 =84000

84000

=125.(98-46)-52.25

=125.52-52.25

=(125-25).52

=100.52

=5200

chú ý . là nhân

a) \(48.19+48.15+134.52\)

\(=48\left(19+15\right)+6968\)

\(=48.34+6968\)

\(=1632+6968\)

\(=8600.\)

b) \(27.121-87.27+73.34\)

\(=27\left(121-87\right)+73.34\)

\(=27.34+73.34\)

\(=34\left(27+73\right)\)

\(=34.100\)

\(=3400.\)

c) \(125.98-125.46-52-25\)

\(=125\left(98-46\right)-52-25\)

\(=125.52-52-25\)

\(=52\left(125-1\right)-25\)

\(=52.124-25\)

\(=6448-25\)

\(=6423.\)

d) \(136.23+136.17-40.36\)

\(=136\left(23+17\right)-40.36\)

\(=136.40-40.36\)

\(=40\left(136-36\right)\)

\(=40.100\)

\(=4000.\)

e) \(66.25+5.66+66.14+33.94\)

\(=33\left(2.50+5.2+14.2+94\right)\)

\(=33\left(50+10+28+94\right)\)

\(=33.182\)

\(=6006.\)