Rút gọn phân số :
35/42
54/24
18/6
rút gọn các phân số
6/10= 70/90= 96/72 = 45/35 =
\(=\dfrac{3}{5}\\ =\dfrac{7}{9}\\ =\dfrac{4}{3}\\ =\dfrac{9}{7}\)
\(\dfrac{6}{10}=\dfrac{3}{5};\dfrac{70}{90}=\dfrac{7}{9};\dfrac{96}{72}=\dfrac{8}{9};\dfrac{45}{35}=\dfrac{9}{7}\)
\(\dfrac{6}{10}=\dfrac{3}{5}\)
\(\dfrac{70}{90}=\dfrac{7}{9}\)
\(\dfrac{96}{72}=\dfrac{4}{3}\)
\(\dfrac{45}{35}=\dfrac{9}{7}\)
Rút gọn các phân số: $\frac{{15}}{6}$ ; $\frac{{12}}{{16}}$ ; $\frac{{35}}{{105}}$
$\frac{{15}}{6} = \frac{{15:3}}{{6:3}} = \frac{5}{2}$
$\frac{{12}}{{16}} = \frac{{12:4}}{{16:4}} = \frac{3}{4}$
$\frac{{35}}{{105}} = \frac{{35:35}}{{105:35}} = \frac{1}{3}$
Bài 1: Rút gọn các phân số: 6 ............... 10 = 70 ............... 90 = 96 ............... 72 = 45 ............... 35 =
\(\dfrac{6}{10}=\dfrac{3}{5};\dfrac{70}{90}=\dfrac{7}{9};\)\(\dfrac{96}{72}=\dfrac{4}{3}\)\(\dfrac{45}{35}=\dfrac{9}{7}\)
\(\dfrac{6}{10}=\dfrac{3}{5};\dfrac{70}{90}=\dfrac{7}{9};\dfrac{96}{72}=\dfrac{4}{3};\dfrac{45}{35}=\dfrac{9}{7}\)
6/10=3/5
70/90=7/9
96/72=4/3
45/35=9/7 nha
HT
rút gọn phân số : a)6/10 b)60/90 c)96/72 d)35/25
Rút gọn các phân số sau:
6/10=------=
70/9=------=
96/72=-------=
45/35=--------=
24/36=--------=
25/100=--------=
`6/10=3/5`
`70/9=70/9`
`96/72=4/3`
`45/35=9/7`
`24/36=2/3`
`25/100=1/4`
Câu 10: Rút gọn mỗi phân số sau về phân số tối giản: \(\dfrac{8}{-12}\dfrac{400}{700}\dfrac{-10}{6}\dfrac{-35}{-105}\)
\(\dfrac{8}{-12}=\dfrac{-8}{12}=\dfrac{-2}{3}\)
\(\dfrac{400}{700}=\dfrac{4}{7}\)
\(\dfrac{-10}{6}=\dfrac{-5}{3}\)
\(\dfrac{-35}{-105}=\dfrac{35}{105}=\dfrac{1}{3}\)
Rút gọn phân số
12/6
35/5
18/2
12/6 = 2
35/5 = 7
18/2 = 9
Ủng hộ mk nha ♡_♡ ☆☆☆
Rút gọn các phân số:
\(\dfrac{3}{6}\); \(\dfrac{18}{24}\); \(\dfrac{5}{35}\); \(\dfrac{40}{90}\); \(\dfrac{75}{30}\).
\(\dfrac{3}{6}=\dfrac{3:3}{6:3}=\dfrac{1}{2}\\ \dfrac{18}{24}=\dfrac{18:6}{24:6}=\dfrac{3}{4}\\ \dfrac{5}{35}=\dfrac{5:5}{35:5}=\dfrac{1}{7}\\ \dfrac{40}{90}=\dfrac{40:10}{90:10}=\dfrac{4}{9}\\ \dfrac{75}{30}=\dfrac{75:15}{30:15}=\dfrac{5}{2}\)
\(\dfrac{3}{6}=\dfrac{3:3}{6:3}=\dfrac{1}{2}\\ \dfrac{18}{24}=\dfrac{18:6}{24:6}=\dfrac{3}{4}\\ \dfrac{5}{35}=\dfrac{5:5}{35:5}=\dfrac{1}{7}\\ \dfrac{40}{90}=\dfrac{40:10}{90:10}=\dfrac{4}{9}\\ \dfrac{75}{30}=\dfrac{75:15}{30:15}=\dfrac{5}{2}\)
\(\dfrac{3}{6}=\dfrac{3:3}{6:3}=\dfrac{1}{2}\)
\(\dfrac{18}{24}=\dfrac{18:6}{24:6}=\dfrac{3}{4}\)
\(\dfrac{5}{35}=\dfrac{5:5}{35:5}=\dfrac{1}{7}\)
\(\dfrac{40}{90}=\dfrac{40:10}{90:10}=\dfrac{4}{9}\)
\(\dfrac{75}{30}=\dfrac{75:15}{30:15}=\dfrac{5}{2}\)
Bài 11. Rút gọn rồi so sánh hai phân số a) 90/126, 6 /7;b) 70/84, 35 /42
a: 90/126=5/7<6/7
b: 70/84=5/6
35/42=5/6
=>70/84=35/42
a)\(\dfrac{90}{126}=\dfrac{5}{7}< \dfrac{6}{7}\Leftrightarrow\cdot\dfrac{90}{126}< \dfrac{6}{7}\)
b)\(\dfrac{70}{84}=\dfrac{5}{6};\dfrac{35}{42}=\dfrac{5}{6}\Leftrightarrow\cdot\dfrac{70}{84}=\dfrac{35}{42}\)