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\(\frac{7}{3}=2\frac{1}{3}\)
\(\frac{16}{9}=1\frac{7}{9}\)
\(\frac{25}{7}=3\frac{4}{7}\)
\(\frac{19}{3}=6\frac{1}{3}\)
\(\frac{23}{12}=1\frac{11}{12}\)
\(\frac{7}{3}=2\frac{1}{3}\)
\(\frac{16}{9}=1\frac{7}{9}\)
\(\frac{25}{7}=3\frac{4}{7}\)
\(\frac{23}{12}=1\frac{11}{12}\)
a;
c; \(\dfrac{1}{10}\) + \(\dfrac{4}{20}\) + \(\dfrac{9}{30}\)+\(\dfrac{16}{40}+\dfrac{25}{50}+\dfrac{36}{60}+\dfrac{49}{70}+\dfrac{64}{80}+\dfrac{81}{90}\)
= \(\dfrac{1}{10}+\dfrac{2}{10}+\dfrac{3}{10}+\dfrac{4}{10}+\dfrac{5}{10}+\dfrac{6}{10}+\dfrac{7}{10}+\dfrac{8}{10}+\dfrac{9}{10}\)
= \(\dfrac{1+2+3+4+5+6+7+8+9}{10}\)
= \(\dfrac{\left(1+9\right)+\left(2+8\right)+\left(3+7\right)+\left(4+6\right)+5}{10}\)
= \(\dfrac{10+10+10+10+5}{10}\)
= \(\dfrac{\left(10+10+10+10\right)+5}{10}\)
= \(\dfrac{10\times4+5}{10}\)
= \(\dfrac{45}{10}\)
= \(\dfrac{9}{2}\)
\(\dfrac{3}{25}=\dfrac{3\times4}{25\times4}=\dfrac{12}{100}\\ \dfrac{7}{8}=\dfrac{7\times125}{8\times125}=\dfrac{875}{1000}\\ \dfrac{9}{45}=\dfrac{9:9}{45:9}=\dfrac{1}{5}=\dfrac{1\times2}{5\times2}=\dfrac{2}{10}\)
\(0,7=\frac{7}{10}\)
\(0,94=\frac{94}{100}\)
\(2,7=\frac{27}{100}\)
\(4,567=\frac{4567}{1000}\)
b) \(\frac{1}{4}=\frac{25}{100}\)
\(\frac{7}{5}=\frac{14}{10}\)
\(\frac{16}{25}=\frac{64}{100}\)
\(\frac{3}{2}=\frac{15}{10}\)
\(0,7=\frac{7}{10}\)
\(0,94=\frac{94}{100}\)
\(2,7=\frac{27}{10}\)
\(4,567=\frac{4567}{1000}\)
b) \(\frac{1}{4}=\frac{25}{100}\)
\(\frac{7}{5}=\frac{14}{10}\)
\(\frac{16}{25}=\frac{64}{100}\)
\(\frac{3}{2}=\frac{15}{10}\)
~ Chúc bạn học giỏi ! ~
^^
\(\frac{1}{4}=0,25;\frac{3}{5}=0,6;\frac{7}{8}=0,875;\frac{3}{2}=1,5\)
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27 / 8 = 3,375
7 / 4 = 1,75
9 / 16 = 0,5625
7 / 25 = 0,28
27/8 = 3,375
7/4 = 1,75
9/16 = 0,5626
7/25 = 0,28