12km68m=12,068m

5286m=5,286

9dam2 9cm2=9,000009dam2

86m2 25cm2=.86,0025m2

mình chưa học dam2

Xin lỗi

45:60=3\4 h=0,75

12:60=1\5=0,2 h

45 phút = 3/4 giờ

12 phút = 1/5 giờ

a) \(\dfrac{7}{4}\text{⇔}1\dfrac{3}{4}\text{⇔}1,75\text{⇔}\dfrac{175}{100}\text{⇔}175\%\)

b) \(\dfrac{12}{5}\text{⇔}2\dfrac{2}{5}\text{⇔}2,4\text{⇔}\dfrac{240}{100}\text{⇔}240\%\)

THANK YOU NHAT VAN!

a: \(\frac74=1\frac34=1,75=\frac{175}{100}=175\%\)

b: \(\frac{12}{5}=2\frac25=2,4=\frac{240}{100}=240\%\)

1,12

~1,08

45mm=4,5dm

780g=0,78kg

k mk nha !!!

45mm=45:100=0,45dm

780g=780:1000=0,78

h minh nha

a) 5hm = 5 100 km = 0,5km       

b) 12dam = 12 100 km = 0,12km

c) 64m = 64 1000 km= 0,064km  

d)  7dm = 7 10000  km = 0,007km

a) 5hm = 5 100 km = 0,5km

b) 12dam = 12 100 km = 0,12km

c) 64m = 64 100 km= 0,064km

d)  7dm = 7 10000  km = 0,007km