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

a) 48.19+48.115+134.52

=48.(19+115)+134.52

=48.134+134.52

=(48+52).134

=100.134

=13400

b) 27.121-87.27+73.34

=27.(121-87)+73.34

=27.34+73.34

=(27+73).34

=100.34

=3400

c)125.98-125.46-52.25

=125.(98-46)-52.25

=125.52-52.25

=(125-25).52

=100.52

=5200

d) 136.23+136.17-40.36

=136.(23+17)-40.36

=136.40-40.36

=(136-36).40

=100.40

=4000

e) 17.93+116.83+17.23

=17.(93+23)+116.83

=17.116+116.83

=(17+83).116

=100.83

=3800

ê)19.27+47.81+19.20

=19.(27+20)+47.81

=19.47+47.81

=(19+81).47

=100.47

=4700

f) 87.23+13.93+70.87

=87.(23+70)+13.93

=87.93+13.93

=(87+13).93

=100.93

=9300

câu e) sai rồi phải là 100.116=11600 mới đúng . Chúc bạn học tốt , yêu bạn nhiều

Trương Huy Tâm sai ròi

66(25+5+14+33)

66.77=5082

136(23+17)-40.36

=136.40-40.36

=40(136-36)

=40.100=4000

35(12+182-94)

35.100=3500

  Bằng 230.825 nha bạn!

  Chúc bạn học giỏi!

mà bn ơi đáu chấm đó là nhân hay là phẩy

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

= 13400

27 x 121 - 87 x 27 + 73 x 34

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

= 27 x 34 + 73 x 34

= 34 x (27 + 73)

= 34 x 100

= 3400

125 x 98 - 125 x 46 - 52 x 23

= 125 x (98 - 46) - 52 x 23

= 125 x 52 - 52 x 23

= 52 x (125 - 23)

= 52 x 102

= 5304

136 x 23 + 136 x 17 + 40 x 36

= 136 x (23 + 17) + 40 x 36

= 136 x 40 + 40 x 36

= 40 x (136 + 36)

= 40 x 172

= 6880

17 x 93 + 116 x 83 + 17 x 23

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

= 17 x 116 + 116 x 23

= 116 x (17 + 23)

= 116 x 40

= 4640

19 x 27 + 47 x 81 + 19 x 20

= 19 x (27 + 20) + 47 x 81

= 19 x 47 + 47 x 81

= 47 x (19 + 81)

= 47 x 100

= 4700

87 x 23 + 13 x 93 + 70 x 87

= 87 x (23 + 70) + 13 x 93

= 87 x 93 + 13 x 93

= 93 x (87 + 13)

= 93 x 100

= 9300

Học tốt!!!

a) \(136.23+136.17-40.36\)

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

\(=136.40-40.36\)

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

\(=40.172\)

\(=6880\)

Đấu chấm là phẩy hay nhân

58(75+50-25.34)=58.(-725)=-42050

27(39+63-2)=27.100=2700

a, 5800

b, 2700

c, 12800

d, 5082

e, 10080

f, 13400

g, 5020

h, 5200

a) 29.75.2+58.50-58.25 b) 9.39.3+27.63-2.27

= (29.2).75+58.50-58.25 = (9.3).39+27.63-2.27

= 58.75+58.50-58.25 = 27.39+27.63-2.27

= 58.(75+50-25) = 27.(39+63-2)

= 58.100 = 27.100

= 5800. = 2700.

c)64.46.2+16.32.8+128.22 d)6.25.11+5.22.3+66.14+33.66

= (64.2).46+(16.8).32+128.22 = (6.11).25+5.(22.3)+66.14+33.66

= 128.46+128.32+128.22 = 66.25+5.66+66.14+33.66

= 128.(46+32+22) = 66.(25+5+14+33)

= 128.100 = 66.77

= 12800. = 5082

a) 29 . 75 . 2 + 58 . 50 - 58 . 25

= (29 . 2) . 75 + 58 . 50 - 58 . 25

= 58 . 75 + 58 . 50 - 58 . 25

= 58 . (75 + 50 - 25)

= 58 . (125 - 25)

= 58 . 100

= 5800

b) 9 . 39 . 3 + 27 . 63 - 2 . 27

= (9 . 3) . 39 + 27 . 63 - 2 . 27

= 27 . 39 + 27 . 63 - 2 . 27

= 27 . (39 + 63 - 2)

= 27 . (102 - 2)

= 27 . 100

= 2700

c) 64 . 46 . 2 + 16 . 32 . 8 + 128 . 22

= (64 . 2) . 46 + (16 . 8) . 32 + 128 . 22

= 128 . 46 + 128 . 32 + 128 . 22

= 128 . (46 + 32 + 22)

= 128 . (78 + 22)

= 128 . 100

= 12800

d) 6 . 25 . 11 + 5 . 22 . 3 + 66 . 14 + 33 . 66

= (6 . 11) . 25 + 5 . (22 . 3) + 66 . 14 + 33 .66

= 66 . 25 + 5 . 66 + 66 . 14 + 33 .66

= 66 . (25 + 5 + 14 + 33)

= 66 . (30 + 14 + 33)

= 66 . (44 + 33)

= 66 . 77

= 5082

e) 12 . 35 + 35 . 182 - 35 . 94

= 35 . (12 + 128 - 94)

= 35 . (140 - 94)

= 35 . 46

= 1610

f) 48 . 19 + 48 . 115 + 134 . 52

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

= 48 . 134 + 134 . 52

= 134 . (48 + 52)

= 134 . 100

= 13400

g) 27 . 121 - 87 . 27 + 73 . 34

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

= 27 . 34 + 73 . 34

= (27 + 73) . 34

= 100 . 34

= 3400

h) 125 . 98 - 125 . 46 - 52 . 25

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

= 125 . 52 - 52 . 25

= (125 - 25) . 52

= 100 . 52

= 5200