thuc hien phep tunh
a, ( 20.24 + 12.24 - 48.22):82
b,(75.54 + 175.54) : ( 20.25.125-625.75)
Tính: ( 75.54 + 175.54) : (20.25.125 - 625.75)
(75.54+175.54):(20.25.125-625.75)
=(4050+9450):(62500-46875)
=13500:15625
0,864 like nếu thích nha
thuc hien phep tinh (75.5^4+175.5^4):(20.25.125-625.75)
(75.54+175.54):(20.25.125-625.75)= (75.625+175.625):(62500-46875)
= 156250:15625= 10
tính nhanh
(20.24+12.24-48.22):82
`(20.2^4+12.2^4-48.2^2):8^2`
`=(32.2^4-12.2^4):8^2`
`=[2^4.(32-12)]:8^2`
`=20.2^4:8^2`
`=20.16:64`
`=5`
Ta có: \(\left(20\cdot2^4+12\cdot2^4-48\cdot2^2\right):8^2\)
\(=\left(32\cdot2^4-12\cdot2^4\right):2^6\)
\(=20\cdot\dfrac{2^4}{2^6}\)
=5
a,[3.(-2)-(-8)].(-7)-(-2).(-5)
b,85.(35-27)-35.(85-27)
c,(20.24-12.23-48.22)2:(-8)2
a,[3.(-2)-(-8)].(-7)-(-2).(-5)
b,85.(35-27)-35.(85-27)
c,(20.24-12.23-48.22)2:(-8)2
Tính: ( 75.54 + 175.54) : (20.25.125 - 625.75)
=(75.54+175.54):(20.25.125-625.75)
=(75.625+175.625):(62500-46875)
=(48675+109375):15625
=158050:15620
=10,1184379
Tính nhanh
b,(75.54+175.54):(20.25.125-625.75)
(75.54+175.54):(20.25.125-625.75)
Giúp mình với mai nộp rồi nhanh nhẹ
= [(75 + 175).\(5^4\)] : (20.5.5.125 - 625.75)
= (250.625): ( 100. 625 - 625.75)
= (250.625): [(100 - 75).625]
= 250.625 : 25.625
= (250:25).625
= 10.625
= 6250
\(\frac{75.5^4+175.5^4}{20.25.125-625.75}=\frac{5^2.3.5^4+5^2.5^4.7}{4.5^2.5^3.5-5^4.5^2.3}=\frac{5^6\left(3+7\right)}{5^6\left(4-3\right)}=\frac{10}{1}=10\)
Thuc hien phep tinh
Đề bài là " Thực hiện phép tính " , thế phép tính nào ? Mk có thấy phép tính nào đâu !?