5^6 : 5^3+ 2^3.2^2 164.53+47.164
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![](https://rs.olm.vn/images/avt/0.png?1311)
a)
204 - 84:12 = 204 - 7 = 197
b)
15.23 + 4.32 - 5.7 = 15.8 + 4.9 – 5.7 = 120 + 36 - 35 = 121
c) Áp dụng:
am . an = am+n
am : an = am-n
56:53 + 23.22 = 53 + 25 = 125 + 32 = 157
d)
164.53 + 47.164 = 164(53 + 47) = 164.100 = 16400
a) 204 - 84 : 12
= 204 - 7 = 197
b) 15.23 + 4.32 - 5.7
= 15.8 + 4.9 - 35
= 120 + 36 - 35
= 156 - 35
= 121
c) 56 : 53 + 23.22
= 56 - 3 + 23 + 2
= 53 + 25
= 125 + 32
= 157
d) 164.53 + 47.164
= 164.( 53 + 47 )
= 164.100
= 16400
![](https://rs.olm.vn/images/avt/0.png?1311)
204-84:2=204-42=162
15.23+4.32-5.7=15.8+4.9-35=120+36-35=121
56:53+23.22=15625:125+8.4=125+32=157
164.53+47.164=164.(53+47)=164.100=16400
HỌC TỐT.
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(204-84:12=204-7=197\)
b) \(15.2^3+4.3^2-5.7=15.8+4.9+5.7=120+36+35=156+35=191\)
c) \(5^6:5^3+2^3.2^2=5^3+2^5=125+32=157\)
d) \(164.53+47.164=164.\left(53+47\right)=164.100=16400\)
_Chúc bạn học tốt_
![](https://rs.olm.vn/images/avt/0.png?1311)
a)
204-84:12
=204-7
=197
b)
15.23+4.32-5.7
=15.8+4.9-5.7
=120+36-35
=156-35
=121
c)
56:53+23.22
=56-3+23+2
=53+25
=125+32
=157
d)
164.53+47.164
=(164.(53+47)
=164.100
=16400
tìm x:
219-7(x+1)=100
=>7(x+1)=219-100
=>7(x+1)=119
=>x+1=119:7
=>x+1=17
=>x=17-1
=>x=16
(3x-6).3=34
=>(3x-6).3=81
=>3x-6=81:3
=>3x-6=27
=>3x=27+6
=>3x=33
=>x=33:3
=>x=11
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 24 +117 + 115 + 176 + 83
=(24+176)+(117+83)+115
= 200+200+115
=515
b) 17.57 + 43.17 + 29
=17.(57+43)+29
=17.100+29
=1700+29
=1729
c) 47.164 + 164.53 + 5 . 43
=164.(47+53)+5.64
=164.100+320
=16400+320
=16720
d)194.12 + 6.437.2 + 3.369.4
=194.12 + 437.12 + 369.12
=12.(194+437+369)
=12.1000
=12000
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 204 - 84.12
= 12.17 - 12.84
= 12 . (17-84)
= 12 . (-67)
= -804
b, 15.23 + 4.32 - 5.7
= 15.8 + 4.9 - 5.7
= 120 + 36 - 35
= 120 +1
= 121
c, 56 : 53 + 23 . 22
= 56-3 + 23+2
= 53 + 25
= 125 - 32
= 93
d, 164.53 + 47.164
= 164.(53 + 47)
= 164 . 100
= 16400
Vậy ...
Nhớ line cho mình nhé!
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 4.7.25 + 2.6.5 = (4.25)7 + (2.5)6
= 100.7 + 10.6 = 700 + 60 = 760
b, 164.53 + 47.164 = 164( 53 + 47) = 164 . 100 = 16400
c, 427 + 354 + 373 + 246 + 155 = ( 427 + 373 ) + ( 354 + 246 ) + 155
= 800 + 600 + 155 = 1400 + 155 = 1555
d, 27.(13 + 5) + 18(59 + 14) = 27 . 18 + 18. 73
= 18(27 + 73) = 18. 100 = 1800
Chúc bạn học tốt! ~
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 204 - 84 : 12 = 204 - 7 = 197
b) 15.23 + 4 . 32 - 5.7 = 15 . 8 + 4 . 9 - 5 . 7 = 120 + 36 - 35 = 121
c) 56 : 53 + 23 . 22 = 15625 : 125 + 8 . 4 = 125 + 32 = 157
d) 164 . 53 + 47 x 164 = 164 x ( 53 + 47 ) = 164 x 100 = 16400