\(17.93+116.83+17.23.\)

\(=17\left(93+23\right)+116.83.\)

\(=17.116+116.83.\)

\(=116\left(17+83\right).\)

\(=116.100=11600.\)

Vậy.....

17 . 93 + 116 . 83 +17 . 23

= 17 . (93 + 23) + 116 . 83

= 17 . 116 + 116 . 83

= 116 . (17 + 83)

= 116 . 100

= 11600

a) \(136.23+136.17-40.36\)

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

\(=136.40-40.36\)

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

\(=40.172\)

\(=6880\)

a) 17.93+116.83+17.23

=(17.93+17.23)+116.83

=17.(93+23)+116.83

=17.116+116.83

=116.(17+83)

=116.100

=11600

b) 125.98-125.46-52.25

=(125.98-125.46)-52.25

=125.(98-46)-52.25

=125.52-52.25

=52.(125-25)

=52.100

=5200

tk nha!

a) 17 . 93 + 116 . 83 + 17 . 23

= ( 17 . 93 + 17 . 23 ) + 116 . 83

= 17 . ( 93 + 23 ) + 116 . 83

= 17 . 116 + 116 . 83

= 116 . ( 17 + 83 )

= 116 . 100

= 11600

\(136\cdot23+136\cdot27-40\cdot36\)

\(=136\cdot\left(23+17\right)-40\cdot36\)

\(=136\cdot40-40\cdot36\)

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

\(=40\cdot100=4000\)

\(17\cdot93+116\cdot83+17\cdot23\)

\(=17\cdot\left(93+23\right)+116\cdot83\)

\(=17\cdot116+116\cdot83\)

\(=116\cdot\left(17+83\right)\)

\(=116\cdot100=11600\)

\(136.23+136.17-40.36\)

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

\(=136.40-40.36\)

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

\(=40.100\)

\(=100\)

\(17.93+116.83+17.23\)

\(=17.\left(93+23\right)+116.83\)

\(=17.116+116.83\)

\(=116\left(17+83\right)\)

\(=116.100\)

\(=11600\)

a,

58.75 + 58.50 - 58.25

= 58.(75 + 50 - 25)

= 58. (125 - 25)

= 58.100

 = 5800

b, 27.39 + 27.63 - 2.27

= 27.(39 + 63 - 2)

= 27.(102 - 2)

= 27.100

= 2700 

c, 128.46 + 128.32 + 128.22

= 128.(46 + 32 + 22)

= 128.(78 + 22)

= 128.100

= 12800

Áp dụng công thức này là được :

m.a+m.b+m.c = m(a+b+c)

a) 58.75 + 58.50 - 58.25

= 58. (75 + 50 - 25)

= 58. 100

= 5800

b) 27.39 + 27.63 + 2.27

= 27. (39 + 63 - 2)

= 27. 100

= 2700

c) 128.46 + 128.32 + 128.22

= 128.(46 + 32 + 22)

= 128. 100

= 12800

d) 12.35 + 35.182 - 35.94

= 35.(12 + 182 - 94)

= 35. 100

= 3500

e) 48.19 + 48.115 + 134.52

= 48.(19 + 115) + 134.52

= 48.134 + 134.52

= 134.(48 + 52)

= 134.100

= 13400

f) 136.23 + 136.17 - 40.36

= 136.(23 + 17) - 40.36

= 136.40 - 40.36

= 40.(136 - 36)

= 40.100

= 4000

g) 17.93 + 116.83 + 17.23

= 17.(93 + 23) + 116.83

= 17.116 + 116.83

= 116.(17 + 83)

= 116.100

= 11600

h) 19.27 + 47.81 + 19.20

= 19.(27 + 20) + 47.81

= 19.47 + 47.81

= 47.(19 + 81)

= 47.100

= 4700

i) 87.23 + 13.93 + 70.87

= 87.(23 + 70) + 13.93

= 87.93 + 13.93

= 93.(87 + 13)

= 93.100

= 9300

#NgHn