Tính nhẩm

5  hm = ..500.. m          3  m = ..... mm          9  km = .90.... hm          1  cm = ..... mm          6  dm = ..60... cm

70 hm = ...7... km     500 cm = ....m          4 dam = ..40.... m           8000 mm = .8...m        1km = ..100.. dam

Viết bảng đơn vị đo :

a)  km - hm - dam - m - dm - cm - mm

b) mm - cm - dm - m - dam - hm - km

bang@@@@

Câu 1

10375181=10km 30hm 7hm 5m 1dm 8 cm 1mm

6017 dm=.......601,7.......m=...60,17..........dam.

0,45 dam=.....0,045........km=......45.......m.

62,64 m=......0,6264........hm=......0,06264........km.

79,734mm=.....0,79734.........m=.....0,00079734........km.

50000 km=.....5000000......dam=.......5000000000.......cm.

0,00008 m=......0,0000008.......hm=.....0,08........mm.

6017dm=601,7m=60,17dam

0,45dam=0,0045km=4,5m

62,64m=0,6264hm=0,06264km

79,734mm=0,079734m=0,000079734

50000km=5000000dam=50000000000cm

0,00008m=0,0000008hm=0,08mm

chuc bạn hoc tot!

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

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

\(5km^2=5000000m^2\)

\(2hm^2=20000m^2\)

\(100dm^2=1m^2\)

\(2dam^2=200m^2\)

\(200cm^2=0.02m^2\)

\(2000000mm^2=2m^2\)

\(3km^2=300ha\)

\(2000dam^2=20ha\)

\(200000m^2=20ha\)

5km²= 5000000m²

2hm²=200m²

100dm² =1m² 

2dam²=200m²

200cm²=0,02m²

2 000 000mm²=2m²

Héc - ta

 3km²=300ha 

2000 dam²=20 ha

 200 000 m² =20 ha

1 km = ...10.... hm

1km = ...100...dam

1km=.......1000...m

1km=........10000....dm

1km=.......100000....cm

1km=.......1000000....mm

1hm = .....0,1.....km

1hm=.....10....dam

1hm=......100....m

1hm=......1000.....dm

1hm=.......10000...cm

1hm=........100000....mm

Học tốt!!!

1 km = 10 hm

1 km = 100 dam

1 km = 1000 m

1 km = 10 000 dm

1 km = 100 000 cm

1 km = 1 000 000 mm

280mm

3120dm

30m

 0,75dam

1050cm

15000m

45hm

18km

725cm

1m65dm

5058m

2km80m

28 cm = 280 mm

312 m = 312 dm

3000 cm = 30 m

730 cm = \(\frac{730}{1000}\)dam

105 dm = 1050 cm

15 km = 15000 m

4500 m = 45 hm

18000 m = 18 km

7 m 25 cm = 725 cm

165 dm =16 \(\frac{5}{10}\)m