18/25=72/100

91/4=2275/100

37/20=185/100

86/125=688/1000

71/8=8875/1000

\(1\frac{8}{25}=\frac{33}{25}=1.32\)

\(9\frac{1}{4}=\frac{37}{4}=9.25\)

\(3\frac{7}{20}=\frac{67}{20}=3.35\)

\(8\frac{6}{125}=\frac{1006}{125}=8.048\)

\(7\frac{1}{8}=\frac{57}{8}=7.125\)

\(5\frac{9}{7}\)\(=\)\(5\)x  \(7\) +    \(9\)=\(\frac{44}{7}\)

5 9/7=7*5+9/7=44/7

6 7/6=6*6+7/6=43/6

4 7/8=8*47/8=39/8

6 7/9=9*6+7/9=61/9

2 8/6=6*2+8/6=20/6

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

=13/5

=49/9

=76/8

=127/20

..xoxo..

\(\dfrac{8}{20};\dfrac{35}{20}\)

\(\dfrac{3}{8};\dfrac{14}{8}\)

\(\dfrac{8}{20};\dfrac{35}{20}\\ \dfrac{12}{32};\dfrac{56}{32}\)

202/13

k nhé

202/13

2000/3=\(666\frac{2}{3}\)

95/23=\(4\frac{3}{23}\)

1002/7=\(143\frac{1}{7}\)

b) 4 1/8 : (4 - 1/4) = 33 /8 : ( 16/4 - 1/4) = 33/8 : 15/4 = 11/10                

c) 1 4/35 + 3 4/7 * 3 1/5 = 39/35 + 25/7 * 16/5 = 39/35 +  80/7 = 39/35 + 400/35 = 439/35

7/3/8 - 4/5/8 = 59/8 - 37/8 = 12

2/1/4 +5/1/4 = 9/4 + 21/4 = 15/2

3/1/4 x 2/3/5 = 13/4 x 13/5 =11/20

\(7\frac{3}{8}-4\frac{5}{8}=\frac{59}{8}-\frac{37}{8}=\frac{22}{8}\)\(=\)\(2,75\)

\(2\frac{1}{4}+5\frac{1}{4}=\frac{9}{4}+\frac{21}{4}=\frac{30}{4}=7,5\)

\(3\frac{1}{4}\times2\frac{3}{5}=\frac{13}{4}\times\frac{13}{5}=\frac{169}{20}=8,45\)

#Minyun