viết các số đo dưới dạng số đo có đơn vị là dam2
2dam2 16m2 =.....dam2 46dam2 5m2 =....dam2
3km2 4cm2 =........dam2 32dam2 9m2 =....dam2
8dam2 62m2 =.....dam2 16 dam2 29m2 =....dam2
52dam2 40m2 =.....dam2 13hm2 24dm2 =....dam2
Viết các số đo sau dưới dạng số đo có đơn vị là dam2
2dam216m2
8dam2 62m2
52dam2 40m2
46dam2 5m2
16dam2 29m2
32dam2 9m2
3km2 4cm2
13 hm224dm2
2,16 dam2
8,62 dam2
52,40 dam2
46,05 dam2
16,29 dam2
32,09 dam2
30000,000009 dam2
1300,0224 dam2
2 dam2 16 m2 = 2,16 dam2
8 dam2 62m2 = 8,62 dam2
52 dam2 40 m2 = 52,4 dam2
46 dam2 5m2 = 46,05 dam2
16 dam2 29 m2 = 16,29 dam2
32 dam2 9m2 = 32,09 dam2
3 km2 4 cm2 =30000,000004 dam2
13 hm2 24 dm2 = 1300,0024 dam2
2dam2 16m2 = 2,16 dam2
8dam2 62m2 = 8,62 dam2
52dam2 40m2 = 52,4 dam2
46dam2 5 m2 = 46,05 dam2
16dam2 29 m2 = 16,28 dam2
32dam2 9m2 = 32,09 dam2
Viết các số đo dưới dạng số đo có đơn vị là đề-ca-mét vuông (theo mẫu):
Mẫu:
8
d
a
m
2
33
m
2
=
8
d
a
m
2
33
100
m
2
=
8
33
100
d
a
m
2
67
d
a
m
2
51
m
2
=
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
.
82
d
a
m
2
7
m
2
=
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
67 dam2 51m2 = 67 dam2 + m2 = dam2
82 dam2 7m2 = 82dam2 + m2 = dam2
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U
Viết các số đo sau dưới dạng số đo có đơn vị là đề - ca - mét vuông:
7 dam2 28m2 = ..................................................................................
95 dam2 50m2 = ................................................................................
68 dam2 7m2 = ..................................................................................
a) 7,28dam2
b) 95,5 dam2
c) 68,07 dam2
7 dam2 28m2 = ....................................7,28dam2..............................................
95 dam2 50m2 = ..................................95,5 dam2..............................................
68 dam2 7m2 = ...................................................68,07 dam2...............................
Viết số thích hợp vào chỗ chấm :
2dam2 =... m2 3dam215m2 = ... m2
200m2 = ... dam2 30hm2 = ... dam2
12hm2 5dam2 = ... dam2 760m2 = ...dam2 ... m2.
200m2; 315m2;
2dam2; 3000dam2;
1205dam2; 7dam2 60m2.
Viết số thích hợp vào chỗ chấm
3dam2=.........m2
15hm2=.......dam2
500m2=........dam2
7000dam2=......hm2
2dam2 90m2=.......m2
17dam2 5m2=.......m2
20hm2 34dam2=....dam2
892m2=.........dam2.......m2
3dam2 = 300 m2 2dam2 90m2= 290m2
15hm2 = 1500dam2 17dam225m2 =1705m2
500m2=5dam2 20hm2 34dam2=2034dam2
7000dam2=700 000m2 892m2 =8dam292m2
viết các số do sau dưới dạng số do có đơn vị là đề - ca - mét vuông
7 dam2 28m2 = .............................................
95 dam2 50 m2= ...........................................
68 dam2 7m2 = ..............................................
7dam2 28/100 dam2;95dam 50/100 dam2;68dam2 7/100dam2
cảm ơn bạn nhé
Viết số thích hợp vào chỗ chấm:
3 d a m 2 = … … … m 2 2 d a m 2 90 m 2 = … … … 0 m 2
15 h m 2 = … … … d a m 2 17 d a m 2 5 m 2 = … … … m 2
500 m 2 = … … … d a m 2 20 h m 2 34 d a m 2 = … … … d a m 2
7000 d a m 2 = … … … m 2 892 m 2 = … … … d a m 2 … … … m 2
3 d a m 2 = 300 m 2 2 d a m 2 90 m 2 = 290 m 2
15 h m 2 = 1500 d a m 2 17 d a m 2 25 m 2 = 1705 m 2
500 m 2 = 5 d a m 2 20 h m 2 34 d a m 2 = 2034 d a m 2
7000 d a m 2 = 700 000 m 2 892 m 2 = 8 d a m 2 92 m 2
Viết phân số thích hợp vào chỗ chấm :
1m2 = ... dam2 1dam2 = ... hm2
3m2 = ... dam2 8dam2 = ... hm2
27m2= ... dam2 15dam2 = ... hm2
Viết số thích hợp vào chỗ chấm :
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 =.... h m 2 | 1 h m 2 =... d a m 2 =... k m 2 | 1 d a m 2 =... m 2 =.. h m 2 | 1 m 2 =100 m 2 =0,01 d a m 2 | 1 d m 2 =... c m 2 =... m 2 | 1 c m 2 =... m m 2 =... d m 2 | 1 m m 2 =.. c m 2 |
Chú ý : Khi đo diện tích ruộng đất người ta còn dùng đơn vị héc-ta (ha)
1ha = … m 2
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