Xin vui lòng đợi...

a) (-125) . 25 . (-32) . (-14)

= [-125 . (-14)]  . 25 . (-32)

= 1750 . 800

= 1400000

còn lại tự làm nhé!! 467568768578769789578797808096585

a) (-125) . 25 . (-32) . (-14)

= [-125 . (-14)] . 25 . (-32)

= 1750 . (-800)

= -1400000

cho mk sửa lại kết quả nhé!! 46457567568768769789676858768769

\(a,38+41+117+159+62\\ =\left(38+62\right)+\left(41+159\right)+117\\ =100+200+117\\ =300+117\\ =417.\\ b,73+86+914+3032\\ =73+1000+3032\\ =1073+3032\\ =5150.\\ c,314.67+314.16+659.83\\ =314.\left(67+16\right)+659.83\\ =314.83+659.83\\ =83.\left(314+659\right)\\ =83.937\\ =?\)

Bn xem lại phần \(c,\) .

\(d,42.53+47.156-47.114\\ =42.53+47.\left(156-114\right)\\ =42.53+47.42\\ =42.\left(53+47\right)\\ =42.100\\ =4200.\)

a) \(38+41+117+159+62=(38+62)+(41+159)+117 \)

\(=100+200+117 =300+117 =417\)

b) \(73+86+968+914+3032=(86+914)+(968+3032)+73\)

\(=1000+4000+73=5073\)

c) \(341.67+341.16+659.83 =341.(67+16)+659.83 =341.83+659.83\)

\(=83.(341+659) =83.1000=83000\)

d) \(42.53+47.156-47.114 =42.53+47(156-114) =42.53+47.42 =42.(53+47)=42.100=4200\)

a) 38 + 41 + 117 + 159 + 62

= ( 38 + 62 ) + ( 41 + 159 ) + 117

= 100 + 200 + 117

= 300 + 117

= 417

b) 42 . 53 + 47 . 156 - 47 .114

= 42 . 53 + 47 . ( 156 - 114 )

= 42 . 53 + 47 x 42

= 42 . ( 53 + 47 )

= 42 x 100

= 4 200

a,38 + 41 + 117 + 159 + 62

= 38 + 62 + 41 + 159 +117

= ( 38 + 62 ) + ( 41 + 159 ) + 117

= 100 + 200 + 117

= 300 + 117 

= 417

b, 42 x 53 + 47 x 156 - 47 x 114

= 42 x 53 + 47 x ( 156 - 114 )

= 42 x 53 + 47 x 42

= 42 x ( 53 + 47 )

= 42 x 100

= 4200

159.(18-59)-59.(8-73)=159.(-41)-59.(-65)

                                  =(100+59).(-41)-59.(-65)

                                  =100.(-41)+59.(-41)-59.(-65)

                                 =(-4100)+59.[(-41)-(-65)]

                                  =(-4100)+1416

                                  =-2684

(-159) . 56 + 43 . (-159) + (-159)

= (-159) . (56 + 43 + 1)

= (-159) . 100

= -15900

\(\left(-159\right).56+43.\left(-159\right)+\left(-159\right)\)

\(=\left(-159\right).\left(56+43+1\right)\)

\(=\left(-159\right).100\)

\(=-15900\)

( - 159 ) . 56 + 43 . ( - 159 ) + ( - 159 )

= ( - 159 ) . ( 56 + 43 + 1  )

= ( - 159 ) . 100

= - 15 900

Đáp án:

 a, 38+41+117+159+6238+41+117+159+62

=(38+62)+(41+159)+117=(38+62)+(41+159)+117

=100     +200      +117=100     +200      +117

=417=417

b, 73+86+968+914+303273+86+968+914+3032

=73+(86+914)+(968+3032)=73+(86+914)+(968+3032)

=73+1000     +4000=73+1000     +4000

=5073=5073

c, 341.67+341.16+659.83341.67+341.16+659.83

=341.(67+16)+659.83=341.(67+16)+659.83

=341.83+659.83=341.83+659.83

=83.(341+659)=83.(341+659)

=83.1000=83000=83.1000=83000

d, 42.53+47.156−47.11442.53+47.156-47.114

=42.53+47.(156−114)=42.53+47.(156-114)

=42.53 +47.42=42.53 +47.42

=42.(53+47)=42.100=42.(53+47)=42.100

=4200=4200

e, 563.23+23.26+23563.23+23.26+23

=23.(563+26+1)=23.(563+26+1)

=23.600=23.600

=13800=13800

f, 132+157+43+68132+157+43+68

=(132+68)+(157+43)=(132+68)+(157+43)

=200      +200=400=200      +200=400

g, 49.68+100.34+6849.68+100.34+68

=49.68+50.68+68=49.68+50.68+68

=68.(49+50+1)=68.(49+50+1)

=68.100=6800=68.100=6800

h, 491.(267+53)+491.(151+67)491.(267+53)+491.(151+67)

=491.(267+53+151+67)=491.(267+53+151+67)

=491.538=491.538

=264158=264158

Vote mk nha.

-100+200-117=-17

\(-38+41-117+159-62=-17\)

-17

có ai giúp mik ko  thế

(- 159). 56 + 43. (- 59) + (- 159)

= [(- 159) x 56] + [43 x (- 59)] + (- 159)

= (- 8904) + (- 2537) + (- 159)

= (- 11441 + (- 159)

= 11600