Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\text{a) }\left(27+514\right)-\left(486-73\right)\)
\(=27+514-486+73\)
\(=\left(27+73\right)+\left(514-486\right)\)
\(=100+1000\)
\(=1100\)
\(\text{b) }\left(38-29+43\right)-\left(43+28\right)\)
\(=38-29+43-43-28\)
\(=\left(38-28\right)+\left(43-43\right)-29\)
\(=10+0-29\)
\(=10-29\)
\(=-19\)
\(\text{c) }\left(-245-12\right)-\left(18-245\right)\)
\(=-245-12-18+245\)
\(=\left(245-245\right)-\left(12+18\right)\)
\(=0-30\)
\(=-30\)
\(\text{d) }\left(327+414\right)-\left(-586-73\right)\)
\(=327+414+586+73\)
\(=\left(327+73\right)+\left(414+586\right)\)
\(=400+1000\)
\(=1400\)
a,(17-414)-(586-83)
=17-414-586+83
=(17+83)+(-414-586)
=100+(-1000)
=-900
b,29.(-13)+27.(-29)+(-140).(-29)
=(-29).(-1).(-13)+27.(-29)+(-140).(-29)
=(-29).13+27.(-29)+(-140).(-29)
=(-29).(13+27-140)
=(-29).(-100)
=2900
a, 29 + (132+868)+(237+763)
= 29+1000+1000=2029
b,(652+148)+(327+73) + 15=1215
c,(146+54)+(121+379) = 200+500=700
d,(-452-548)+(395+605)=-1000+1000=0
a)29+132+237+868+763
=161+1105+763
=1266+763
=2029
b)652+327+148+15+73
=979+163+73
=1142+73
=1215
c)146+121+54+379
=267+433
=700
d)(-452)+395+(-548)+605
=(-57)+57
=0
a) 185+434+515+266+155 = (185+515)+(434+266)+155
= 700+700+155 = 1555
b. (652+148)+(327+73)+15=800+400+15=1215
c. (125*8)*(5*2)*1=1000*10*1=10000
d. (125*8)*(12*2)=1000*24=24000
e.3*25*4*2+4*37*6+2*38*12=600+888+912=2400
mik ik mik til lại cko nha! mấy bạn
a) 327+48+73+12
= ( 327 + 73 ) + ( 48 + 12 )
= 300 + 100
= 400
b) 4.5.25.24
= ( 4.25).(5.24)
= 100 . 120
= 12000
c) 30.19+30.81
= 30.(19 + 81 )
= 30.100
= 3000
d) 27.48+27.50+54
=27.48 + 27.50 + 27.2
= 27.(48 + 50 + 2)
= 27.100
= 2700
e) 36.67+18.66
= 36.67 + 18.2.33
= 36.67 + 36.33
= 36.(67 + 33)
= 36.100
= 3600
Chúc bạn học tốt! (^ _ ^)
- Giải:
a) 29 + ( 132 + 868 ) + ( 237 + 763 )
= 29 + ( 1000 + 1000 )
= 29 + 2000 = 2029
b) 652 + 327 + 148 + 15 + 73
= ( 652 + 148 ) + ( 327 + 73 ) + 15
= ( 800 + 400 ) + 15 = 1215
-------Phần còn lại nhờ mấy bn khác lm hộ nhé-------
a) 29 + 132 + 237 + 868 + 763
= 29 + (132 + 868) + (237 + 763)
= 29 + 1000 + 1000
= 2029
b) 652 + 327 + 148 + 15 + 73
= (652 + 148) + (327 + 73) + 15
= 800 + 400 + 15
= 1215
c) 35 . 24 + 35 . 38 + 65 . 75 + 45 . 65
= 35(24 + 38) + 65(75 + 45)
= 35 . 62 + 65 . 120
= 5 . 7 . 2 . 31 + 65 . 12 . 10
= 10 . 7 . 31 + 65 . 12 .10
= 10(7 . 31 + 65 . 12)
= 10(217 + 780)
= 10 . 997
= 9970
d) 3 . 25 + 4 . 37 . 6 + 2 . 38 . 12
= 3 . 25 + 4 . 37 . 2 . 3 + 2 . 38 . 12
= 3 . 25 + 12 . 37 . 2 + 2 . 38 . 12
= 3 . 25 + 12 . 2(37 + 38)
= 3 . 25 + 12 . 2 . 75
= 3 . 25 + 12 . 2 . 3 . 25
= 3 . 25(1 + 12 . 2)
= 3 . 25 . 25
= 1875
a. 367+129+133+371+17
=(367+133)+(129+371)+17
=500+500+17
=1017
b. 29+132+237+868+763
=29+(132+868)+(237+763)
=29+1000+1000
=2029
c. 652+327+148+15+73
=(652+148)+(327+13)+15
=800+340+15
=1155
a) 367 + 129 + 133 +371 + 17
= ( 367 + 133 ) + ( 129 + 371 ) + 17
= 500 + 500 + 17
= 1017
b) 29 + 132 + 237 + 868 + 763
= ( 132 + 868 ) + ( 763 + 237 ) + 29
= 1000+ 1000 +29
=2029
c) 652 + 327 + 148 + 15 + 73
= ( 652 + 148 ) + ( 327 + 73 ) + 15
= 800 + 400 + 15
=1215
=1400 nha bn
(327+73)-(586+414)=-600