a) 125. (-4) . (-16) . 25 . 8
b) 16 . (38 + 2) - 38.(16 - 2)
Những câu hỏi liên quan
31 tháng 7 2023 lúc 16:04
a)-524 . [(23+(-45)]+524.(-45+123)
b)47.69-31.(-47)
c)16.(38-2)-38.(16-1)
d) (-41).(59+2)+59.(41-2)
e) 125.(-8).(-25).9.4.100^0 :3
a) \(-524\cdot\left[23+\left(-45\right)\right]+524\cdot\left(-45+123\right)\)
\(=-524\cdot\left[\left(23-45\right)-\left(-45+123\right)\right]\)
\(=-524\cdot\left(23-45+45-123\right)\)
\(=-524\cdot-100\)
\(=52400\)
b) \(47\cdot69-31\cdot\left(-47\right)\)
\(=-47\cdot\left(-69-31\right)\)
\(=-47\cdot-100\)
\(=4700\)
c) \(16\left(38-2\right)-38\left(16-1\right)\)
\(=16\cdot38-16\cdot2-38\cdot16+38\)
\(=-16\cdot2+38\)
\(=-36+38\)
\(=2\)
d) \(\left(-41\right)\cdot\left(59+2\right)+59\cdot\left(41-2\right)\)
\(=-41\cdot59-41\cdot2+41\cdot59-2\cdot59\)
\(=-41\cdot2-2\cdot59\)
\(=-2\left(41+59\right)\)
\(=-2\cdot100\)
\(=-200\)
e) \(25\cdot\left(-8\right)\cdot\left(-25\right)\cdot9\cdot4\cdot100^0:3\)
\(=\left(-1000\right)\cdot\left(-25\right)\cdot9\cdot4\cdot1:3\)
\(=25000\cdot9\cdot4:3\)
\(=25000\cdot3\cdot4\)
\(=100000\cdot3\)
\(=300000\)
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) 47.69-31.(-47)
b) 16.( 38 -2 ) - 38.( 16 -1 )
c) (-41).( 59+2 ) + 59 .( 41 -2 )
d)125.(-8).(-25).9.4.1000 :3
a) \(47.69-31\left(-47\right)=47-69-\left(-31\right).47\)
\(=47.69+31.47=47.\left(69+31\right)=47.100=4700\)
b) \(16\left(38-2\right)-38\left(16-1\right)=16.38-16.2-38.16-\left(-38\right).1\)
\(=\left(16.38-38.16\right)-32+38=0-32+38=6\)
c) \(\left(-41\right)\left(59-2\right)+59\left(41-2\right)\) \(=\left(-41\right).59-\left[\left(-41\right).2\right]+59.41-59.2\)
\(=\left[\left(-41\right).59+59.41\right]-\left[\left(-49\right).2-51.2\right]=0-\left(-100\right).2=200\)
d) \(125.\left(-8\right)\left(-25\right)9.4.1000\div3=125.200.9.4.1000\div3\)
\(=\left(125.4\right)\left(9\div3\right)\left(200.1000\right)=500.3.200000=300000000\)
giải hộ mình nha
1
a, 16 . ( 38 - 2 ) - 38 . ( 16 - 1 )
b, ( - 41 ) . ( 59 + 2 ) + 59 . ( 41 - 2 )
c, 19 . 25 + 9 . 95 + 38 . 15
d,( - 32 ) . 125 . ( -9 ) . ( - 25 )
trả lời nhanh nha
a,6
b,-200
c,1900
d,-900000
k mình nha
mình cần gấp
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16 . ( 38 - 2 ) - 38 . ( 16 - 1 )
=16 . 38 - 2 .16 - 38 .16 - 1.38
=16.38.(2.16-1.38)
=608.(32-38)
=608.(-6)
=-3648
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1 a, 16.38-16.2-38.16-38.1=608-32-608-38=-70 t
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Xem thêm câu trả lời
a, 5/11 + 1/2 + 2/5 + 6/11 + 3/4 + 16/25 + 5/16
b,19/4 + 37/100 + 1/8 + 132/25 + 5/2 + 37/12
c, 1313/1313 * 165165/143143 * 424242/151515
d, (121/122 * 123/125 + 127/129) * (1995/1996 * 17/16 - 21/25 : 16/17) * (42/30 * 75/23 - 19/23 * 210/38
a) 47.69-31.(-47)
b) 16.( 38 -2 ) - 38.( 16 -1 )
c) (-41).( 59+2 ) + 59 .( 41 -2 )
d)125.(-8).(-25).9.4.1000 :3
a)47.69-31.(-47)
=(47-47).69-31
=0.69-31
=690-31
=659
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a. 47.69 - 31 .(-47)
=47 . 69 - (-31) .47
=47 . (69+31)
=47 . 100 = 4700
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Bài 1: Tính nhanh
a, 5/11 + 1/2 + 2/5 + 6/11 + 3/4 + 16/25 + 5/16
b,19/4 + 37/100 + 1/8 + 132/25 + 5/2 + 37/12
c, 1313/1313 * 165165/143143 * 424242/151515
d, (121/122 * 123/125 + 127/129) * (1995/1996 * 17/16 - 21/25 : 16/17) * (42/30 * 75/23 - 19/23 * 210/38)
4. Tính: (tính nhanh nếu có thể)
a) 125. (–24) + 24. 225
b) 26. (–125) – 125. (–36)
c) 29. (–17) + 27.( –29) + (–14).( –29)
d) 17.( –37) – 23.37 – 46.( –37)
e) 16.(38 – 2) – 38.(16 – 1)
f) (–41).(59 + 2) + 59.(41 – 2)
a)125.(-24)+24.225
=(-125).24+24.225
=24.[(-125)+225]
=24.100
=2400
Các câu khác bạn làm tương tự nha
a ) \(125\times\left(-24\right)+24\times225\)
\(=24\left[\left(-125\right)+225\right]\)
\(=24\times100\)
\(=2400\)
b ) \(26\times\left(-125\right)-125\times\left(-36\right)\)
\(=125\left[\left(-26\right)-\left(-36\right)\right]\)
\(=125\times10\)
\(=1250\)
a)-524. [23+(-45)+524.(-45+123)
b) 47.69-31.(-47)
c)16.(38-2)-38.(10.1
d)125.(-8).(-25).9.4.100^0 .3
tính nhanh:
a) -4.2.6.25.(-7).5
b) 47.69-31.(-47)
c) 16.(38-2)-38.(16-1)
d) (-41).(59+2)+59.(41-2)
e) A=19.25+9.95+38.15
f) B= (-32).125.(-9).(-25)
g) C=(-3879-3879-3879-3879).(-25)
h) D=369.(-2)-41.72