\(\frac{5}{3}\cdot\frac{4}{7}\cdot\frac{3}{5}\cdot\frac{7}{8}\)
\(=\frac{1}{2}\)
128.72 + 14.256
= 128.72 + 14.2.128
= 128.(72 + 14.2)
= 128.100
= 12800
\(\frac{5}{3}\cdot\frac{4}{7}\cdot\frac{3}{5}\cdot\frac{7}{8}\)
\(=\left(\frac{5}{3}\cdot\frac{3}{5}\right)\cdot\left(\frac{4}{7}\cdot\frac{7}{8}\right)\)
\(=1\cdot\frac{1}{2}\)
\(=\frac{1}{2}\)
\(128\cdot72+14\cdot256\)
\(=128\cdot2\cdot36+14\cdot256\)
\(=256\cdot36+14\cdot256\)
\(=256\cdot\left(36+14\right)\)
\(=256\cdot50\)
\(=12800\)
Học tốt #
+) \(\frac{5}{3}\times\frac{4}{7}\times\frac{3}{5}\times\frac{7}{8}\)
\(=\left(\frac{5}{3}\times\frac{3}{5}\right)\times\left(\frac{4}{7}\times\frac{7}{8}\right)\)
\(=1\times\frac{1}{2}\)
\(=\frac{1}{2}\)
+) \(128\times72+14\times256\)
\(=128\times72+14\times2\times128\)
\(=128\times72+28\times128\)
\(=128\times\left(72+28\right)\)
\(=128\times100\)
\(=12800\)
_Chúc bạn học tốt_
