\(\frac{36\times36-2}{2+34\times38}=\frac{1292}{1296}=\frac{323}{324}\)
\(\frac{36\times36-2}{2+34\times38}=\frac{1292}{1296}=\frac{323}{324}\)
A =\(\frac{1}{1\times2\times3}\)+\(\frac{1}{2\times3\times4}\)+\(\frac{1}{3\times4\times5}\)+........+\(\frac{1}{36\times37\times38}\)+\(\frac{1}{37\times38\times39}\) GIÚP MK VỚI MK CẦN GẤP
Tính nhanh :
\(\frac{2}{2\times3\times4}\)+ \(\frac{2}{3\times4\times5}\)+ .... \(\frac{2}{37\times38\times39}\)+ \(\frac{2}{38\times39\times40}\)
Giúc mk nhé
Tính bằng cách thuận tiện :
a) \(20,18\times36+63\times20,18+20,18\)
Tìm phân số \(\frac{a}{b}\)biết : \(\frac{a}{b}\times\frac{3}{5}=\frac{1}{5}+\frac{2}{3}\)
\(\frac{64\times50\times44\times100}{27\times38\times146\times19}\)
Tính nhanh \(\frac{64\times50+44\times100}{27\times38+146\times19}\)
A. \(35\times34+35\times38+65\times75+65\times45=\) =
\(B.3\times25\times8+4\times37\times6+2\times18\times12\)=
a)\(5+\frac{37}{36}+\frac{34}{35}+\frac{1}{35\cdot36}\)
b)\(\frac{99}{98}-\frac{98}{97}+\frac{1}{97\cdot98}\)
tính nhanh \(0,36\times630+0,6\times36\times6+3,6\)
tính nhanh \(0,36\times630+0,6\times36\times6+3,6\)