\(\dfrac{7}{5}=1,4\\ \dfrac{34}{20}=1,7\\ \dfrac{25}{50}=0,5\\ \dfrac{6}{25}=0,24\\ \dfrac{24}{125}=0,192\)

`7/5 =7:5=1,4`

`34/20 = 34:20=1,7`

`25/50=25:50=0,5`

`6/25=6:25=0,24`

`24/125=0,192`

11/30

#HT#

7/5=1,4

9/8=1,125

11/25=0,44

31/50=0,62

13/20=0,65

1,4

1,125

0,44

0,62

a)  

\(\dfrac{1}{2}=0,5;\dfrac{3}{4}=0,75;\dfrac{7}{5}=1,4;\dfrac{9}{8}=1,125;\dfrac{26}{25}=1,04;\dfrac{120}{125}=0,96\)

b) 

\(\dfrac{15}{25}=0,6;\dfrac{75}{25}=3;\dfrac{90}{300}=0,3;\dfrac{27}{36}=0,75;\dfrac{51}{85}=0,6\)

a,1/2=5/10;3/4=75/100;7/5=140/100;26/25=108/100;120/125=960/1000

b,15/25=60/100;75/25=300/100;90/300=3/10;27/36=3/4=75/100;

51/85=3/5=60/100;39/65=3/5=60/100

\(\frac{3}{20}=\frac{15}{100}\)

\(\frac{50}{500}=\frac{1}{10}\)

\(\frac{4}{25}=\frac{16}{100}\)

\(\frac{6}{125}=\frac{48}{1000}\)

15/100

1/10

16/100

48/1000

\(\frac{2}{5}=\frac{4}{10}\)\(\frac{5}{2}=\frac{25}{10}\) \(\frac{16}{25}=\frac{64}{100}\) \(\frac{132}{125}=\frac{1052}{1000}\)

2,5 ; 0,4 ; 2,125 ; 0,64 ; 1,056

a) \(\frac{15}{10}=1,5\)        \(\frac{675}{10}=6,75\)          \(\frac{7}{10}=0,7\)      

\(\frac{79}{100}=0,79\)       \(\frac{5}{100}=0,05\)           \(\frac{67}{100}=0,67\)

b) \(\frac{1}{2}=1\div2=0,5\)                   \(\frac{3}{4}=3\div4=0,75\)

\(\frac{15}{8}=15\div8=1,875\)              \(\frac{7}{25}=7\div25=0,28\)

\(\frac{19}{30}=19\div30=0,63\)              \(\frac{21}{125}=21\div125=0,168\)

a] 41/100

Mng bày e với:

a)Khoanh vào phân số thập phân:3/20;41/100;1/50;2/10;3/1000;7/700.

b)Viết các phân số sau thành phân số thập phân:

13/5=.......2,6...............

75/500=........0,15............

4/25=.............0,16............

62/125=................496............