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![](https://rs.olm.vn/images/avt/0.png?1311)
\(12000hm^2=120km^2\)
\(12m^29dm^2=1209dm^2\)
\(\dfrac{1}{10}km^2=10ha\)
\(\dfrac{3}{4}km^2=75ha\)
\(1800ha=18km^2\)
\(\dfrac{1}{2}ha=5000m^2\)
![](https://rs.olm.vn/images/avt/0.png?1311)
7/10 ha = 7000 m2
5/4 km2 = 125 ha
3/100 ha = 300 m2
4/5 km2 = 800 000 m2
\(\dfrac{7}{10}\)ha = 7000 m2 \(\dfrac{5}{4}\)km2 = 125 ha
\(\dfrac{3}{100}\)ha = 300 m2 \(\dfrac{4}{5}\)km2 = 800000 m2
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{3}{10}\)ha=..3000..m2
\(\frac{1}{5}\)ha=...2000..m2
60000m2=.....6...ha
67000ha =..670.....km2
\(\frac{3}{10}\) km2 =...30...ha
\(\frac{2}{5}\) km2=....40...ha
![](https://rs.olm.vn/images/avt/0.png?1311)
k m 2h m 2
d a m 2m 2d m 2c m 2m m 21 k m 2 =100 h m 21 h m 2 = 100 d a m 2 = 0,01 k m 21 d a m 2 = 100 m 2 = 0,01 h m 21 m 2 =100 m 2 =0,01 d a m 21 d m 2 = 100 c m 2 = 0,01 m 2
1 c m 2 = 1000 m m 2 = 0,01 d m 21 m m 2 = 0,01 c m 2
so sánh
dam ha2 ... 77 dam2
15 ha 304 m2 ... 150 304 m2
75 ha 3 dam2... 3/4 km2
9 ha 99 m2 ... 1/10 km2
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
37 m3 = 37000000 cm3
590 000 cm3 = 0.59 m3
32 km2 5 ha = 3205 ha
7 ha = 0.07 km2
4/5 km2 = 80 ha
1/2 m3 = 500 dm3
397ha = 3 km2 97 ha
6 m3 7dm3 = 6,007 m3
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{1}{4}\) ha = 2500 m2
\(\frac{1}{100}\)km2 = 1 ha
\(\frac{2}{5}\) km2 = 40 ha
![](https://rs.olm.vn/images/avt/0.png?1311)
1km2
12,5km2
0,189km2
14,63km2
0,046km2
0,013009km2
0,0098km2
0,9084km2
0,0034km2
7,658321km2
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 1000 ha = 10 km2
b, 125 ha = 1,25 km2
c, 57,4 ha = 0,574 km2
d, 3,2 ha = 0,032 km2
~HT~ ^^
a 1000 ha = 100km2
b 125 ha =.1,25.km2
c57,4 ha =0,574km2
d 3,2 ha =......0,032..km2
hok tốt