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\(8m^226dm^2=8,26m^2\)
\(20m^24dm^2=2004dm^2\)
\(45dm^2=0,45m^2\)
\(7m^27dm^2=70700cm^2\)
\(4cm^27mm^2=407mm^2\)
\(5dm^29cm^2=509cm^2\)
\(\frac{1}{2}ha=5000m^2\)
câu cuối hình như đề sai!
8m2 26dm2=8,26m2
20m2 4dm2= 2040dm2
45dm2=0,45m2
7m2 7dm2=707000cm2
4cm 7mm2=40,7mm2
5dm2 9cm2= 50,9cm2
1/2 ha =50000 m2
1/5 kg=20000dam2
đúng thì k cho mik nha
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(6m^226dm^2=6.26m^2\)
\(8m^212m^2=20m^2\)
\(7m^28dm^2=7.08m^2\)
\(6m^229dm^2=6.29m^2\)
\(53dm^2=0.53m^2\)
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1)
1,25 tấn = 1 tấn 250 kg
8 m² 50 cm² = 8,005 m²
0,68 km = 680 m
420 dam² = 4,2 ha
2)
7/14 = 0,5
51% = 51/100 = 0,51
5 1/2 = 5 + 1/2 = 5,5
55/1000 = 0,055
![](https://rs.olm.vn/images/avt/0.png?1311)
1,03kg=0,0103 tạ
\(13ha8m^2=13,0008ha\)
\(4900m^2=0,49ha\)
\(35dm^2=0,0035dam^2\)
\(9874ha=98km^274ha\)
\(23dm^2=0,000023ha\)
\(0.17km^2=170000m^2\)
103
13,0008
0,49
0,0000023
17000000
2ha 50 m2
0,00819
200000
0,00011373
![](https://rs.olm.vn/images/avt/0.png?1311)
8 m2 5 dm2 = 8,005m2
805m2= 0,0805 ha
950kg= 0,95 tấn
6024m2=0,6024 ha
học tốt~~~
![](https://rs.olm.vn/images/avt/0.png?1311)
a)\(\frac{2}{5}dam^2=40m^2\)
\(\frac{3}{4}hm^2=7500m^2\)
\(\frac{5}{8}km^2=625000m^2\)
b)\(\frac{2}{5}m^2=40dm^2\)
\(\frac{3}{4}m^2=7500cm^2\)
\(\frac{5}{8}m^2=625000mm^2\)
#Y/n
\(\frac{3}{5}ha+\frac{2}{7}ha=\frac{31}{35}ha\)
\(\frac{7}{8}ha-\frac{1}{2}ha=\frac{3}{8}ha\)
\(\frac{5}{8}m^2+\frac{3}{8}m^2\times2=\frac{5}{8}m^2+\frac{3}{4}m^2=\frac{11}{8}m^2\)
\(\frac{2}{7}m^2\div2+6m^2=\frac{1}{7}m^2+6=\frac{43}{7}m^2\)