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)8,6352m²=8m²63dm²52cm²

b)15,5km²=1500hm²5000dam²

\(8,6352m^2=8m^263dm^252cm^2\)

\(15,5km^2=1550hm^20dam^2\).

a,8 dam 5 m-8dam 51 m=2m=20dm

b,61dm59cm=669cm

8 hm = 800 m

8 m = 80 dm

9 hm = 900 m

6 m = 600 cm

7 dam = 70 m

8 cm = 800 mm

3 dam = 30 m

4 dm = 400 mm.

8 hm = 800 m

8 m = 80 dm

9 hm = 900 m

6 m = 600 cm

7 dam = 70m

8 cm = 800mm

3 dam = 30 m

4 dm = 400 mm

TL:

8 hm = 800 m

8 m = 80 dm

9 hm = 900 m

6 m = 600 cm

7 dam = 70 m

8 cm = 800 mm

3 dam = 30 m

4 dm = 400 mm.

HT

1m=.0.001 km

5dam=500dm

720cm=7.2m

45,7mm=0.00457dam

37,06dm=0.376dam

a) 125dm = 12m5dm

3672cm = 36m7dm2cm

b) 275dam=2km75dam

1975m=1km9hm75m

125 dm=12 m 5dm

3672cm=36m7dm2cm

275dam 2km75dam

1975m=1km9hm75m

a) 125 dm = 12 m 5 dm

 3672 cm = 36 m 7 dm 2 cm

b ) 275 dam = 2 km 75 dam 

1975 m = 1 km 9 hm 75 m.

HT

a) 125 cm = 1,25 m = 12,5 dm

b) 15 m 24 cm = 15,24 m = 152,4 dm

c) 7 km 15 m = 7,015 km = 70150 dm = 701,5 dam

d) 4 cm 8mm = 4,8 cm = 0,48 dm = 0,048 m

a) 1,25 ; 12,5

a) 125 cm = 1,25 m = 12,5 dm

b) 15 m 24 cm = 15,24 m = 152,4 dm

c) 7 km 15 m = 7,015 km = 70150 dm = 701,5 dam

d) 4 cm 8mm = 4,8 cm = 0,48 dm = 0,048 m

1km = 10 hm

1m = 10 dm

1km =1000 m

1 m =100 cm

1 hm =10 dam

1 m = 1000 mm

1hm =100 m

1 dm =10 cm

1 dam =10 m

1 cm =10 mm.

de the

1 dam = 10 m    5 dam = 50 m    1hm = 10 dam

1hm = 100 m    3hm = 300 m    5hm = 50 dam

1cm = 10 mm    2m = 20 dm    3m = 300 cm

bó tay