Chuyển các hỗn số sau thành phân số :
3\(\frac{2}{5}\) ; 2\(\frac{4}{9}\) ; 7\(\frac{3}{8}\) ; 15 \(\frac{1}{10}\)
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\(\left(a\right)3\frac{2}{4}=3x4+2=\frac{14}{4}\)
\(\left(b\right)5\frac{3}{2}=5x3+2=\frac{17}{2}\)
5\(\frac{3}{5}\)= \(\frac{28}{5}\)
4\(\frac{2}{3}\)= \(\frac{14}{3}\)
6\(\frac{6}{7}\)= \(\frac{48}{7}\)
\(5\frac{3}{5}=5.6\) \(4\frac{2}{3}=4\left(6\right)\) \(6\frac{5}{7}=6\left(714285\right)\)
\(\frac{31}{4}=7\frac{3}{4}\)
\(\frac{25}{3}=8\frac{1}{3}\)
\(\frac{36}{5}=7\frac{1}{5}\)
\(\frac{78}{21}=3\frac{5}{7}\)
\(\frac{65}{23}=2\frac{19}{23}\)
\(2\dfrac{3}{4}=\dfrac{2\times4+3}{4}=\dfrac{11}{4}\\ 3\dfrac{4}{5}=\dfrac{3\times5+4}{5}=\dfrac{19}{5}\\ 4\dfrac{3}{5}=\dfrac{4\times5+3}{5}=\dfrac{23}{5}\\ 11\dfrac{12}{13}=\dfrac{11\times13+12}{13}=\dfrac{155}{13}\\ 12\dfrac{11}{13}=\dfrac{12\times13+11}{13}=\dfrac{167}{13}\\ 3\dfrac{3}{5}=\dfrac{3\times5+3}{5}=\dfrac{18}{5}\)
2\(\dfrac{3}{4}\)=\(\dfrac{11}{4}\)
3\(\dfrac{4}{5}\)=\(\dfrac{19}{5}\)
4\(\dfrac{3}{5}\)=\(\dfrac{23}{5}\)
11\(\dfrac{12}{13}\)=\(\dfrac{155}{13}\)
12\(\dfrac{11}{13}\)=\(\dfrac{167}{13}\)
3\(\dfrac{3}{5}\)=\(\dfrac{18}{5}\).
\(4\frac{2}{3}+2\frac{3}{4}.7\frac{3}{11}=\frac{14}{3}+\frac{11}{4}.\frac{80}{11}=\frac{14}{3}+20=\frac{14}{3}+\frac{60}{3}=\frac{74}{3}\)
\(4\frac{2}{3}+2\frac{3}{4}\times7\frac{3}{11}\)
\(=\frac{14}{3}+\frac{11}{4}\times\frac{80}{11}\)
\(=\frac{14}{3}+\frac{11\times80}{4\times11}\)
\(=\frac{14}{3}+20\)
\(=\frac{14}{3}+\frac{60}{3}\)
\(=\frac{74}{3}\)
a) 28/140=0.2 b) 2 23/75=2.3066
33/75=0.44 4 216/900=4.24
261/900=0.29 1 415/1250=1.332
415/1250=0.332 5 28/140=5.2
2 3/5 = 13/5
5 4/9= 49/9
9 3/8 =75/8
12 7/10= 127/10
Đúng ko
K mk nha
23/4=\(5\dfrac{3}{4}\)
41/5=\(8\dfrac{1}{5}\)
57/6=\(9\dfrac{3}{6}\)
-26/6=\(-4\dfrac{2}{6}\)
-8/3=\(-2\dfrac{2}{3}\)
\(\dfrac{23}{4}=5\dfrac{3}{4}\)
\(\dfrac{41}{5}=8\dfrac{1}{5}\)
\(\dfrac{57}{6}=9\dfrac{3}{6}\)
\(-\dfrac{26}{6}=-4\dfrac{2}{6}\)
\(-\dfrac{8}{3}=-2\dfrac{2}{3}\)
17/5
22/9
59/8
151/10
đây là lời xin lỗi của tui
nhớ k cái nha
chân thành xin lỗi
a, 17/5
b, 22/4
c, 60/8
d, 151/10
các bạn nhớ cho minh k với nha mình chân thành cảm ơn.