132 . 181 - 52 : 181 + 144 .19
giúp mik vs
Tính hợp lí nhất : -459+181+(-246)+450+(-172) giúp mình vs ạ
-459+181+(-246)+450+(-172)
Tính bằng 2 câch nhé giúp vs
Thực hiện phép tính bằng 2 cách :
A, 8.25.(-125).4.12.(-20025)0 : (-3)
B, -459+181+(-246)+450+(-172)
C, -12.46+12.(-53)-12
D, 32.(132-247)-132.(32-247)
Giúp mình với mình sẽ tick ạ@@ please
a ) cách 1 :
\(8.25.\left(-125\right)+4.12.\left(-20025\right)^0:\left(-3\right)\)
\(=\left(-125.8\right).\left(4.25\right).12.1:\left(-3\right)\)
\(=\left(-1000\right).100.12\)
\(=-1200000:\left(-3\right)\)
\(=400000\)
a) cách 2 :
\(..............\)
\(=\left(8.25\right)\left(-125.4\right).12.1:\left(-3\right)\)
\(=200.\left(-500\right).12:\left(-3\right)\)
\(=-1200000:\left(-3\right)=400000\)
d)\(...........\)
\(=32.132-32.247-132.32+132.247\)
\(=132.247-32.247\)
\(=247\left(132-32\right)\)
\(=247.100=24700\)
tính hợp lí
a) 7.(-2)3-12.(-5)+(-17)
b) 1632-37-(-157)-163-1532
c) 47.(-918)+(-53).918
d) (-52).(-281)+(-52).181
a: \(7\cdot\left(-2\right)^3-12\cdot\left(-5\right)+\left(-17\right)\)
\(=7\cdot\left(-8\right)+60-17\)
=-56+43
=-13
b: \(1632-37-\left(-157\right)-163-1532\)
\(=\left(1632-1532\right)-37-163+157\)
=100-200+157
=57
c: \(47\cdot\left(-918\right)+\left(-53\right)\cdot918\)
\(=918\left(-47\right)+\left(-53\right)\cdot918\)
\(=918\cdot\left(-47-53\right)\)
\(=918\left(-100\right)=-91800\)
d: \(\left(-52\right)\cdot\left(-281\right)+\left(-52\right)\cdot181\)
\(=\left(-52\right)\left(-281+181\right)\)
\(=\left(-52\right)\cdot\left(-100\right)=5200\)
a: 7⋅(−2)3−12⋅(−5)+(−17)7⋅(−2)3−12⋅(−5)+(−17)
=7⋅(−8)+60−17=7⋅(−8)+60−17
=-56+43
=-13
b: 1632−37−(−157)−163−15321632−37−(−157)−163−1532
=(1632−1532)−37−163+157=(1632−1532)−37−163+157
=100-200+157
=57
c: 47⋅(−918)+(−53)⋅91847⋅(−918)+(−53)⋅918
=918(−47)+(−53)⋅918=918(−47)+(−53)⋅918
=918⋅(−47−53)=918⋅(−47−53)
=918(−100)=−91800=918(−100)=−91800
d: (−52)⋅(−281)+(−52)⋅181(−52)⋅(−281)+(−52)⋅181
=(−52)(−281+181)=(−52)(−281+181)
=(−52)⋅(−100)=5200=(−52)⋅(−100)=5200
Tính tổng:a) S = 1 + 1 3 + 1 9 + 1 27 + 1 81 + 1 243 + 1 279
Ta có: S x 3 = 3+1+ 1 3 + 1 9 + 1 27 + 1 81 + 1 243
Vậy S x 3 - S = 3 - 1 729
S x 2 = 2186 729 suy ra S = 2186 729 :2= 1093 729
Tính nhanh tổng sau S = 1 + 1 3 + 1 9 + 1 27 + 1 81 + 1 243 + 1 729
a, ( - 5 ) . ( - 7 ) . 4 . 20 . ( - 25 )
b, ( - 16 ) . 73 + ( - 16 ) . 27
c, ( - 48 ) . 159 - ( - 48 ) . 59
d , 72 . ( - 83 ) + ( - 72 ) . ( - 125 )
e , ( - 81 ) . 125 - 181 . ( - 125 )
giup mik vs ak mik camon
a, ( - 5 ) . ( - 7 ) . 4 . 20 . ( - 25 )
= -70000
b, ( - 16 ) . 73 + ( - 16 ) . 27
= -1600
c, ( - 48 ) . 159 - ( - 48 ) . 59
= -4800
d , 72 . ( - 83 ) + ( - 72 ) . ( - 125 )
= 3014
e , ( - 81 ) . 125 - 181 . ( - 125 )
= 12500
#Hoctot
a -70000.0000
b-1600.000000
c-4800.000000
d-4968.000000
e-12500.00000
a, 70000
b, 1600
c, 4800
d, 3014
e, 12500
a)2750-1229+2750-[-438-29-438]
b)(-5)+(-37)-45+151-(-37)+151
c)53-145-359-53+145-259
d)(-81)-132-547+181-132-53
e)50-2016+50-118+2016-18
f)-[-171+171+223]-[172-105+172]+223
mọi người giúp mk với ạ , mk đang cần gấp
tính nhanh:
181+3-4-5+6+7-8-9+10+11-12-13+14+15-16-17+18+19
các bạn giải đầy đủ ra giúp mình với nhé!
=181+(3-4-5+6)+(7-8-9+10)+(11-12-13+14)+(15-16-17+18)+19
=181+0+0+0+0+19
=181+19
=200