tính nhanh:
\(\frac{\left(100x44x50x64\right)x\left(37414,8:1000+2242,52:100\right)}{16x14,96x25x\left(27x38+19x146\right)}\)
Tính nhanh:
\(\frac{\left(100x44+50x64\right)x\left(37414,8:1000+2242.52:100\right)}{16x14,96x25x\left(27x38+19x146\right)}\)
cho A= (100x44+50x64)x(37414,8:1000+2242,52:100)
cho B= (16x14,96x25)x(27x38+19x146)
A= (100x44+50x64)x(37414,8:1000+2242,52:100)
A = 100x(44+32)x(3741,48+2242,52) : 100
=(44+32)x(3741,48+2242,52)
=76x5984=454784
B= (16x14,96x25)x(27x38+19x146)
= 5984x6x(171+379)
=5984x550=3291200
A= (100x44+50x64)x(37414,8:1000+2242,52:100)
B=(16x14,96x 25)x(27x38+19x146)
Hãy tính A:B
Cho A=(100x44 + 50x64)x(37414,8:1000 + 2242,52:100)
Cho B = (16x14,96x25)x(27x38 + 19x146)
Hãy tính A:B
Đề??? hình như sai, xem mk ghi như z có sai ko? nếu có thì nói mk nhé! ( để sửa lại)
ta có: \(A=\left(100\times44+50\times64\right)\times\left(37414,8:1000+2242,52:1000\right)\)
\(A=\left(100\times44+50\times2\times32\right)\times\left(37414,8\times\frac{1}{1000}+2242,52\times\frac{1}{1000}\right)\)
\(A=\left[100\times\left(44+32\right)\right]\times\left[\frac{1}{1000}\times\left(37414,8+2242,52\right)\right]\)
\(A=100\times\frac{1}{1000}\times\left(44+32\right)\times\left(37414,8+2242,52\right)\)
\(A=\frac{1}{10}\times76\times39657,32=301395,632\)
\(B=\left(16\times14,96\times25\right)\times\left(27\times38+19\times146\right)\)
\(B=\left(400\times14,96\right)\times\left(27\times2\times19+19\times146\right)\)
\(B=400\times14,96\times[19\times\left(27\times2+146\right)]\)
\(B=400\times14,96\times19\times200=22739200\)
rùi bn tự tính A :B nhé! ( xem đề mk sửa có sai ko)
Giúp mik với !!!
Mik sắp toang òi
Sáng mai cô mik kiểm tra sớm !!!
Mik ko làm đc bài bài này là ko xong với cô òi.
Tính nhanh :
\(\left(\frac{100x44+50x64}{16x14,96x25}\right)x\left(\frac{37414,8:1000+2242,52}{27x38x19,546}\right)\)
Hứa sẽ k cho mà !!!
Giúp mik với !!!!!!!!
bài phức tạp thế
Chia buồn cho bạn
Mk ko giúp đc gì rồi
Cho A=(100x44 + 50x64)x(37414,8:1000 + 2242,52:100)
Cho B = (16x14,96x25)x(27x38 + 19x146)
tính A chia B
các bn chỉ cần ghi đpá án của A chia B thui vì mik ko tính ra
nahnh lên nhé mik tik cho
A:B=\(\frac{454784}{22739200}=\frac{1}{50}\)
Tính nhanh:\(\frac{\left(1+2\right)\times3}{\left(2+3\right)\times4}+\frac{\left(2+3\right)\times4}{\left(3+4\right)\times5}+...+\frac{\left(999+1000\right)\times1001}{\left(1000+1001\right)\times1002}+\frac{\left(1000+1001\right)\times1002}{\left(1001+1002\right)\times1003}\)
\(\frac{\left(1+\frac{2012}{1}\right)\left(1+\frac{2012}{2}\right).......\left(1+\frac{2012}{100}\right)}{\left(1+\frac{1000}{1}\right)\left(1+\frac{1000}{2}\right).....\left(1+\frac{1000}{2012}\right)}\)
Giúp mik với
Tính nhanh:
a. A=\(\left(-1\right)^{2n}.\left(-1\right)^n.\left(-1\right)^{n+1}\left(n\in N\right)\)
b. B=\(\left(10000-1^2\right)\left(10000-2^2\right)\left(10000-3^2\right)..\left(10000-1000^2\right)\)
c. C=\(\left(\frac{1}{125}-\frac{1}{1^3}\right)\left(\frac{1}{125}-\frac{1}{2^3}\right)\left(\frac{1}{125}-\frac{1}{3^3}\right)...\left(\frac{1}{125}-\frac{1}{25^3}\right)\)
d. D=\(1999^{\left(1000-1^3\right)\left(1000-2^3\right)\left(1000-3^3\right)...\left(1000-10^3\right)}\)
a) \(A=\left(-1\right)^{2n}.\left(-1\right)^n.\left(-1\right)^{n+1}=\left(-1\right)^{3n+1}\)
b) \(B=\left(10000-1^2\right)\left(10000-2^2\right).........\left(10000-1000^2\right)\)
\(=\left(10000-1^2\right)\left(10000-2^2\right)......\left(10000-100^2\right)....\left(10000-1000^2\right)\)
\(=\left(10000-1^2\right)\left(10000-2^2\right).....\left(10000-10000\right).....\left(10000-1000^2\right)=0\)
c) \(C=\left(\frac{1}{125}-\frac{1}{1^3}\right)\left(\frac{1}{125}-\frac{1}{2^3}\right)..........\left(\frac{1}{125}-\frac{1}{25^3}\right)\)
\(=\left(\frac{1}{125}-\frac{1}{1^3}\right)\left(\frac{1}{125}-\frac{1}{2^3}\right).....\left(\frac{1}{125}-\frac{1}{5^3}\right)......\left(\frac{1}{125}-\frac{1}{25^3}\right)\)
\(=\left(\frac{1}{125}-\frac{1}{1^3}\right)\left(\frac{1}{125}-\frac{1}{2^3}\right)........\left(\frac{1}{125}-\frac{1}{125}\right).....\left(\frac{1}{125}-\frac{1}{25^3}\right)=0\)
d) \(D=1999^{\left(1000-1^3\right)\left(1000-2^3\right)........\left(1000-10^3\right)}\)
\(=1999^{\left(1000-1^3\right)\left(1000-2^3\right)........\left(1000-1000\right)}=1999^0=1\)