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a: \(1\dfrac{9}{10}=1,9\)
\(2\dfrac{66}{100}=2,66\)
\(3\dfrac{72}{100}=3,72\)
\(4\dfrac{999}{1000}=4,999\)
b: \(8\dfrac{2}{10}=8,2\)
\(36\dfrac{23}{100}=36,23\)
\(54\dfrac{7}{100}=54,07\)
\(12\dfrac{254}{1000}=12,254\)
2/5 = 0,4
3/5 = 0,6
3/4 = 0,75
5/8 = 0,625
2 1/2 = 2,5
1/4 = 0,25
4 1/5 = 4,2
5 3/8 = 5,375
Học tốt!!!
\(\dfrac{1}{4}\) = 0,25
\(\dfrac{3}{4}\) = 0,75
\(\dfrac{5}{7}\) ≈0,714
\(\dfrac{12}{28}\) ≈ 0,43
\(\dfrac{35}{105}\)≈ 0,33
\(1,\\ \dfrac{3}{5}=\dfrac{21}{35};\dfrac{4}{7}=\dfrac{20}{35}\\ \dfrac{2}{3}=\dfrac{4}{6};\dfrac{5}{6}=\dfrac{5}{6}\\ \dfrac{4}{9}=\dfrac{8}{18};\dfrac{1}{6}=\dfrac{3}{18}\\ 2,\\ \dfrac{5}{9}=\dfrac{10}{18};\dfrac{7}{8}=\dfrac{14}{16};\dfrac{24}{42}=\dfrac{12}{21}\)
1. \(\dfrac{3}{5}=\dfrac{21}{35};\dfrac{4}{7}=\dfrac{20}{35}\)
\(\dfrac{2}{3}=\dfrac{4}{6};\dfrac{5}{6}=\dfrac{5}{6}\)
\(\dfrac{4}{9}=\dfrac{16}{36};\dfrac{1}{6}=\dfrac{6}{36}\)
2. \(\dfrac{5}{9}=\dfrac{10}{18}\)
\(\dfrac{7}{8}=\dfrac{14}{16}\)
\(\dfrac{24}{42}=\dfrac{12}{21}\)