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530dm2 = 53000cm2
846000cm2 = 846dm2
10km2 = 10000000m2
13dm2 29cm2 = 1329cm2
300dm2 = 3m2
9000000m2 = 9km2.
![](https://rs.olm.vn/images/avt/0.png?1311)
\(9km^215m^2=9000015m^2\)
\(6km^29m^2=6000009m^2\)
\(8540396m^2=8km^2540396m^2\)
\(5m^214cm^2=50014cm^2\)
\(5dm^223cm^2=523cm^2\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{2}{8}km^23m^2=0,25km^23m^2=2500030000cm^2\)
\(\frac{2}{5}m^232dm^2=0,4m^232dm^2=7200cm^2\)
\(\frac{3}{8}km^224m^2=0,375km^224m^2=3750240000cm^2\)
\(\frac{2}{4}m^2321dm^2=0,5m^2321dm^2=37100cm^2\)
CHÚC BN HỌC TỐT!!!!!
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27000 kg = …270……… tạ
245780 kg =…245… tấn 780….kg
50 tấn 789 kg =…50789… kg
800 dm2 3cm2 =…803.. cm2
75689 cm2 = 7…….m2…5689..cm2
90 km2 5m2 = 90000005…..m2
270 tạ
245 tấn 780 kg
50789 kg
80003 cm2
7 m2 5689cm2
900005 m2
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bài 1:
130 dm2=13000 cm2
13dm2 29 cm2 =1329 cm2
34600 cm2 = 346 dm2
300 dm2 = 3m2
10 km2 = 10000000 m2
9000000m2=9km2
bài 2
số học sinh là 30 học sinh
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`17 m^2=17xx10000=170000cm^2`
`7/10 dm^2=7/10xx100=70 cm^2`
`80000 cm^2=80000xx1/10000=8 m^2`
`5m^2 60cm^2=5xx10000+60=50060 cm^2`
17m2= 170000 cm2 7/10dm2=70 cm2 80000 cm2 = 8 m2 5m2 60cm2 =50060 cm2
![](https://rs.olm.vn/images/avt/0.png?1311)
4m2 = 400 dm2
3dm2 = 300 cm2
3m2 = 30000 cm2
5m2 25dm2 = 225dm2
5m2 20cm2 = 50020cm2
1/5m2 = 20dm2
1/10dm2 = 10cm2
1/100m2 = 100cm2
1500dm2 = 15m2
600cm2 = 6dm2
Chúc bạn học thật tốt !
a,4m2=400dm2
3dm2=300cm2
2m2 25dm2=225dm2
5m2 20cm2=50020cm2
b,1/5m2=20dm2
1/10dm2=10cm2
1/100m2=1cm2
1500dm2=15m2
600cm2=6dm2
9000000m2=9km2
9000000m2=9 km2
5m235cm2=500,34 dm2