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67 dam2 51m2 = 67 dam2 + 
m2 = 
dam2
82 dam2 7m2 = 82dam2 + 
m2 = 
dam2
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U
| k m 2 |
h
m
2
|
d a m 2 | m 2 | d m 2 | c m 2 | m m 2 |
| 1 k m 2 =100 h m 2 | 1 h m 2 = 100 d a m 2 = 0,01 k m 2 | 1 d a m 2 = 100 m 2 = 0,01 h m 2 | 1 m 2 =100 m 2 =0,01 d a m 2 | 1
d
m
2
= 100
c
m
2
= 0,01
m
2
|
1 c m 2 = 1000 m m 2 = 0,01 d m 2 | 1 m m 2 = 0,01 c m 2 |
Chú ý : Khi đo diện tích ruộng đất người ta còn dùng đơn vị héc-ta (ha)
1ha = 10000 m 2
a) 1,2075 km2=1207500 m2 b) 0,452 hm2 = 4520 m2
c) 12,075 ha = 120750 m2 d) 10,241 dam2=1024,1 m2
a) 1,2075 km2 = 1207500 m2 b) 0,452 hm2 = 4520 m2
c) 12,075 ha = 120750 m2 d) 10,241 dam2 = 1024,1 m2
Câu 1: a)
Km2 | Hm2 | Dam2 | M2 | Dm2 | Cm2 | Mm2 |
1km2 = 100hm2 | 1hm2 = 100dam2 = 0,01 km2 | 1dam2 = 100m2 = 0,01hm2 | 1m2 = 100dm2 = 0,01dam2 | 1dm2 = 100cm2 = 0,01m2 | 1cm2 = 100mm2 = 0,01dm2 | 1mm2 = 0,01cm2 |
b) Chú ý: Khi đo diện tích ruộng đất người ta còn dùng đơn vị héc-ta (ha)
1ha = 10000m2
Trong bảng đơn vị đo diện tích:
– Đơn vị gấp 100 lần đơn vị bé hơn tiếp liền.
– Đơn vị bé bằng 1/ 100 đơn vị lớn hơn tiếp liền.
b)
Đơn vị lớn gấp 10 lần đơn vị bé hơn tiếp liền
Đơn vị bé bằng một phần 10 đơn vị lớn hơn tiếp liền
34dm2= o,34 m2
5290cm2=0,529m2
4ha =0,0004m2
3,2 dam2=320 m2
0,5 km2=500000m2
0,15 ha= 1500m2
Vũ Thanh Trúc mình cảm ơn bạn nhiều nhé nhưng bạn làm còn thiếu bài trên đấy.
2m2 3cm2=..2,03...m2
4065 cm2=..40,65...m2
3 dam2 15m2=.315......m2
9050 kg=....9.tấn .....50..kg
35m 23cm=..35,23....m
1/2 thế kỷ=..50....năm
9m5mm=...9,005..m
14 dam 9dm=...140,09..m
14 tạ 6kg=..14,06..tạ
12 tấn 5 yến=...12,05...tấn
19 m2 6 dm2=...19,0006...m2
14 dam2 4dm2=...140004....dam2
1 km 7dm =...10,07..m
3hm 3dm=..300,03...m
9 yến 9kg=..9,9..yến
7 tấn 7 yến=.7,07..tấn
92m2 5m2=..97..m2
5km2 5dm2=..5,005...km2
2m2 3cm2=2,0003m2
4065 cm2=0.4065m2
3 dam2 15m2=315m2
9050 kg= 9 tấn 50 kg
35m 23cm=3523m
1/2 thế kỷ=50năm
9m5mm=9,0005m
14 dam 9dm=140.9m
14 tạ 6kg=14,06tạ
12 tấn 5 yến=12;005tấn
19 m2 6 dm2=19;06m2
14 dam2 4dm2=14.0004dam2
1 km 7dm =1000,7m
3hm 3dm=300,3m
9 yến 9kg=9,9yến
7 tấn 7 yến=7,07tấn
92m2 5m2=97m2
5km2 5dm2=5,00000005km2
275 m = 0,275 km
1098 m2 = 10,98 dam2
7,58km = 7580 m
203,8 m2 = 2,038 dam2
chúc bạn học tốt!