A)5dam² 39 m² = ..5,39.. dam²

B) 39m²8dm²=..39,08..m²

C) 6 giờ 15 phút = ..6,25.giờ 

D) 3dm³ 15 cm³ = ..3,015..dm³

E) 6m³ 215 dm³ =..6215..dm³ 

G) 4 tấn 9kg=..4,009..tấn

`5dam^2 39m^2 =5+39:100=5,39dam^2`

`39m^2 8dm^2 = 39+8:100=39,08m^2`

`6 giờ 15 phút = 6+15:60=6,25 giờ`

`3dm^3 15cm^3 = 3+15:1000=3,015 dm^3`

`6m^3 215dm^3 =6xx1000+215=6215dm^3`

`4 tấn 9kg=4+9:1000=4,009 tấn`

a) 5m 3dm = 53dm

      9m 2dm = 92dm

      8dm 1cm = 81cm

b) 7m 12cm = 712cm

      4m 5cm = 405cm

      3m 2dm = 320cm

4 m = 4000mm                                                               7hm = 7000dm

6m 8dm =680 cm                                                            8 dm = 800mm

4dam 8m = 48m         (0,25đ)               7m 8dm = 78dm      (0,25đ)                           

6hm 7 m = 607m        (0,25đ)               4m 5cm = 405cm     (0,25đ)    

128m

24,8m

9,85dm

2,63m

4,04

a) 8dm = 80 cm

b) 50cm = 5dm

c) 3dm7cm = 37cm

d) 94cm = 9dm4cm

a) 8dm=80cm

b) 50cm=5dm

c) 3dm7cm=37cm

d) 94cm=9dm4cm

6m 8dm = 68 dm    2m 20 cm = 220 cm

3m 5dm = 35 dm    7m 28 cm = 728 cm

4m 7dm = 47 dm    8m 55cm = 855 cm

`3h15p = 195p`.

`6km 35m = 6,035 km`.

`5m^3 8dm^3 = 5008 dm^3`.

`2t 450kg = 2,45t`.

`3` giờ `15` phút `=` `3,25` giờ

`6` `km` `35` `m` `=` `6,035` `km`

`5` `m^3` `8` `dm^3` `=` `5008` `dm^3`

`2` tấn `450` `kg` `=` `2,45` tấn