![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 2: Tính nhanh
a) 29 + 132 + 237 + 868 + 3
= 29+(132+858)+(237+3)
=29+990+240
=1259
![](https://rs.olm.vn/images/avt/0.png?1311)
\(46+\left(-80\right)+34=\left(46+34\right)-80=80-80=0\)
\(115-\left(-85\right)+35-\left(46+35\right)=115+85+35-46+35\)
\(=\left(115+85\right)+\left(35-35\right)-46=200+0-46=154\)
\(5\left(-9\right).2.\left(-7\right)\left(-2020\right)^0=\left(-45\right)\left(-14\right).1=630\)
\(57\left(49-16\right)+57\left(24-49\right)=57.49+57.16+57.24-57.49\)
\(=57\left(49-49+16+24\right)=57.40=2280\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 46 + (-80) + 34
= (46 + 34) - 80
= 80 - 80
= 0
b) 115 - (-85) + 35 - (46 + 35)
= 115 + 85 + 35 - 46 - 35
= (115 + 85) + (35 - 35) - 46
= 200 + 0 - 46
= 154
c) 5. (-9). 2. (-7). (-2020)0
= (5. 2). [(-9). (-7)]. (-2020)0
= 10. 63. 1
= 630
d) 57. (49 - 16) - 57. (24 + 49)
= 57. 49 - 57. 16 - 57. 24 - 57. 49
= 2793 - 912 - 1368 - 2793
= (2793 - 2793) + (-912 - 1368)
= 0 + (-2280)
= -2280
Chúc bạn học tốt!!!
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(-472+\left(235-28\right)-\left(35-350\right)\)
\(=-472+235-28-35+350\)
\(=\left(-472-28\right)+\left(235-35\right)+350\)
=-500+350+200
=50
b: \(91\cdot172+91\cdot13-91\cdot85\)
\(=91\cdot\left(172+13-85\right)\)
\(=91\cdot100=9100\)
c: \(798-298:\left[19-2\left(5^2-22\right)^2\right]\cdot1^{2023}\)
\(=798-298:\left[19-2\left(25-22\right)^2\right]\)
\(=798-298:\left[19-2\cdot3^2\right]\)
\(=798-298:\left(19-18\right)\)
=798-298
=500
![](https://rs.olm.vn/images/avt/0.png?1311)
46 + ( -80 ) + 34 = ( 46 + 34 ) - 80 = 80 - 80 = 0
115-(-85)+35-(46+35) = 115 + 85 + 35 - 46 - 35 = ( 115 + 85 ) + ( 35 - 35 ) - 46 = 200 - 46 = 154
5. ( - 9 ).2.(-7).\(^{-2020^0}\) = ( 5.2 ). ( -9 . -7 ) . 1 = 10 . 63 = 630
57 . ( 49 - 16 ) - 57. ( 24 + 49 ) = ( 49-16 - 24 - 49 ) . ( 57 - 57 ) = -40 . 0 = 0
35 . 34 + 35 . 38 +5 .28 .7
= 35 . 34 + 35 . 38 + 35 . 28
= 35 .( 34+38+28)
=35.100
=3500