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c: \(23\cdot75+25\cdot10+25\cdot13+180\)
\(=25\left(23\cdot3+10+13\right)+180\)
\(=25\cdot98+180\)
=2450+180
=2630
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 80- (4.52 - 3.23)
= 80- ( 208 -69 )
=80+139 quy tắc đổi dấu trừ tước dấu ngoặc
= 219
e: Ta có: \(2448:\left[119-\left(23-6\right)\right]\)
\(=2448:\left(119-23+6\right)\)
\(=2448:102=24\)
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a. 45 + 15 - 33 = 60 - 33 = 27
b. 23 * 75 + 25 * 23 + 180 = 23 * ( 75 + 25 ) + 180 = 23 * 100 + 180 = 2300 + 180 = 2480
c. 2^3 * 3 + 76 - ( 50 + 10^2 ) :3 = 8 * 3 + 76 - ( 50 + 100 ) : 3 = 24 + 76 - 150 : 3 = 100 - 50 = 50
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\(5^6\text{ : }5^4+2^3\cdot2^2-1^{2017}\)
\(=5^2+2^5-1\)
\(=25-32-1\)
\(=-7-1\)
\(=-8\)
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a, = 80-(4.25-3.8)
= 80 - ( 100 - 24 )
= 80 - 76
= 4
b , 23,75+25,23+180 = 48.98 + 180 = 228.98
c , 2448 : [119 - ( 23 - 6 ) = 2448 : [ 119 - 17 ]
= 2448 : 7
= 394.7142857
a, = 80-(4.25-3.8)
= 80 - ( 100 - 24 )
= 80 - 76
= 4
b , 23,75+25,23+180
= 48.98 + 180 = 228.98
c , 2448 : [119 - ( 23 - 6 ) = 2448 : [ 119 - 17 ]
= 2448:7
= 394.7142857
tick nhé bạn
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 80 - (4.52 - 3.23)
= 80 - 100 + 24
= 4
b) 23.75 + 25.23 + 180
= 25.(23.3 + 23) + 180
= 25.23.4 + 180
= 100.23 + 180
= 2300 + 180
= 2480
c) 2448 : [119 - (23 - 6)]
= 2448 : (119 - 17)
= 2448 : 102
= 24
a,80 - (100-24)
= 80-76
= 4
b,1725+575+180
=2300+180
=2480
c,2448 : [119-17]
=2448 : 102
= 24
mik mong bn sẽ làm đúng
![](https://rs.olm.vn/images/avt/0.png?1311)
b)23.75+25.23+180
23.(75+25)+180
23.100+180
2300+180
2480
c)
-257-(-257)+100
(-257+257)+100
0+100
100
d)
-3-4+6
-3+(-4)+6
-7+6
-1
\(23\cdot75+25\cdot10+25\cdot13+180\\ =23\cdot75+25\cdot\left(10+13\right)+180\\ =23\cdot75+25\cdot23+180\\ =23\cdot\left(75+25\right)+180\\ =23\cdot100+180\\ =2300+180\\ =2480\)