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a) \(3,7:4,5=\dfrac{3,7}{4,5}=\dfrac{37}{45}\)
b) \(2\dfrac{1}{3}:4\dfrac{2}{3}=\dfrac{7}{3}:\dfrac{14}{3}=\dfrac{7}{3}\times\dfrac{3}{14}=\dfrac{1}{2}\)
c) \(\dfrac{3}{8}:0,7=\dfrac{3}{8}:\dfrac{7}{10}=\dfrac{3}{8}\times\dfrac{10}{7}=\dfrac{15}{28}\)
d) \(5\dfrac{1}{7}:2\dfrac{1}{3}=\dfrac{36}{7}:\dfrac{7}{3}=\dfrac{36}{7}\times\dfrac{3}{7}=\dfrac{108}{49}\)
Lời giải:
a.
\(1,5:2,16=\frac{15}{10}: \frac{216}{100}=\frac{3}{2}: \frac{54}{25}=\frac{3}{2}.\frac{25}{54}=\frac{25}{36}\)
b.
\(4\frac{2}{7}: \frac{3}{5}=\frac{30}{7}:\frac{3}{5}=\frac{30}{7}.\frac{5}{3}=\frac{50}{7}\)
c.
\(\frac{2}{9}: 0,3=\frac{2}{9}: \frac{3}{10}=\frac{2}{9}.\frac{10}{3}=\frac{20}{27}\)
\(a,0,7:1,5=\frac{7}{10}:\frac{15}{10}=\frac{7}{10}\cdot\frac{10}{15}=\frac{7}{15}\)
\(b,2\frac{1}{5}:\frac{3}{4}=\frac{11}{5}:\frac{3}{4}=\frac{11}{5}\cdot\frac{4}{3}=\frac{44}{15}\)
\(c,3:0,02=3:\frac{2}{100}=3\cdot\frac{100}{2}=150\)
a: \(1.5:2.16=\dfrac{25}{36}\)
b: \(\dfrac{3}{8}:0.54=\dfrac{25}{36}\)
c: \(-0.375:3.63=-\dfrac{25}{242}\)
Lời giải:
$3:0,02=\frac{3}{0,02}=\frac{300}{2}=\frac{150}{1}$