Tran Quang@ Bạn đã tick ai đâu ?

Tran Quang@ Bạn đã tick ai đâu ?

4 1/2=4,5

3 4/5=3,8

2 3/4=2,75

1 12/25=1,48

Chọn A

0,7=7/10

0,05=1/20

0,079=79/1000

0,654=327/500

0,47=47/100

b)45/10=4,5

437/10=43,7

58246/100=58,246

94/100=0,94

53/1000=0,053

a) hỗn số 1 và 123/1000=1123/1000=1,123

345/10=34,5

456/100=4,56

B)0,3=3/10

0,75=75/100=3/4

0,02=2/100=1/50

2,5=25/10=5/2

1-b,2-c

a) $\genfrac{}{}{0ex}{}{1}{10}=0,1$

$\genfrac{}{}{0ex}{}{1}{100}=0,01$

$\genfrac{}{}{0ex}{}{1}{1000}=0,001$

$\genfrac{}{}{0ex}{}{1}{10000}=0,0001$

b) $\genfrac{}{}{0ex}{}{84}{10}=8,4$

$\genfrac{}{}{0ex}{}{225}{100}=2,25$

$\genfrac{}{}{0ex}{}{6453}{100}=64,53$

$\genfrac{}{}{0ex}{}{25789}{10000}=2,5789$

$15=1,5;\genfrac{}{}{0ex}{}{35}{100}=0,35;\genfrac{}{}{0ex}{}{107}{100}=1,07$

$\genfrac{}{}{0ex}{}{22109}{1000}=22,109;\genfrac{}{}{0ex}{}{14}{5}=\genfrac{}{}{0ex}{}{28}{10}=2,8;\genfrac{}{}{0ex}{}{920}{1000}=0,92$

$\genfrac{}{}{0ex}{}{138}{100}=1,38;\genfrac{}{}{0ex}{}{2007}{10}=200,7;\genfrac{}{}{0ex}{}{1}{1000}=0,001$