Tính
a) 3\(\dfrac{1}{2}\) . \(\dfrac{4}{49}\) - [ 2,(4) : 2\(\dfrac{5}{11}\) ] : ( \(\dfrac{-42}{5}\))
b) 0,4(3) + 0, 6(2) .2 \(\dfrac{1}{2}\) - \(\dfrac{\dfrac{1}{2}+\dfrac{1}{3}}{0,58}\) : \(\dfrac{50}{53}\)
c) 2\(\dfrac{1}{2}\) - 3.4(12) - \(\dfrac{4}{3}\) + \(\dfrac{1}{3}\) . ( \(\dfrac{1}{2}\) +0,5 - 3\(\dfrac{1}{2}\))
d) [ 0,(5) . 0,(2)] : ( 3 \(\dfrac{1}{3}\) : \(\dfrac{33}{25}\) ) - ( \(\dfrac{2}{5}\) . 1\(\dfrac{1}{3}\)) : \(\dfrac{4}{3}\)
GIÚP MK ĐI MK ĐAG CẦN GẤP CHIỀU...
Đọc tiếp
Tính
a) 3\(\dfrac{1}{2}\) . \(\dfrac{4}{49}\) - [ 2,(4) : 2\(\dfrac{5}{11}\) ] : ( \(\dfrac{-42}{5}\))
b) 0,4(3) + 0, 6(2) .2 \(\dfrac{1}{2}\) - \(\dfrac{\dfrac{1}{2}+\dfrac{1}{3}}{0,58}\) : \(\dfrac{50}{53}\)
c) 2\(\dfrac{1}{2}\) - 3.4(12) - \(\dfrac{4}{3}\) + \(\dfrac{1}{3}\) . ( \(\dfrac{1}{2}\) +0,5 - 3\(\dfrac{1}{2}\))
d) [ 0,(5) . 0,(2)] : ( 3 \(\dfrac{1}{3}\) : \(\dfrac{33}{25}\) ) - ( \(\dfrac{2}{5}\) . 1\(\dfrac{1}{3}\)) : \(\dfrac{4}{3}\)
GIÚP MK ĐI MK ĐAG CẦN GẤP CHIỀU NỘP BÀI
\(a)3\dfrac{1}{2}.\dfrac{4}{49}-\left[2,\left(4\right):2\dfrac{5}{11}\right]:\left(\dfrac{-42}{5}\right)\)
\(=\dfrac{7}{2}.\dfrac{4}{49}-\dfrac{88}{27}:\left(\dfrac{-42}{7}\right)\)
\(=\dfrac{2}{7}-\dfrac{-220}{567}\)
\(=\dfrac{382}{567}\)
các phần con lại dễ nên bn tự lm đi nhé mk bn lắm
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