1/đổi đơn vị đo:
275 m=......km
1098 m2=.......dam2
7,58km=......m
203,8 m 2=.......dam2
Những câu hỏi liên quan
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
...
Đọc tiếp
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 số thích hợp vào chỗ chấm :
k
m
2
h
m
2
d
a
m
2
m
2
d
m...
Đọc tiếp
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
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Người ta đo được kích thước của một hạt bụi là khoảng 2,5 pm; cường độ dòng điện dùng châm cứu là khoảng 2 mA. Hãy xác định các đơn vị cơ bản và các tiếp đầu ngữ của hai đơn vị trên. Đồng thời đổi hai đơn vị trên về cơ bản
viết số đo sau dưới dạng số đo có đơn vị là hecta: 65000 m2, 9,2 km2
(1ha = 1hm2 = 10000 m2 , 1a = 1 dam2 = 100 m2 = 0,01 ha)
viết các số đo sau dưới dạng số dó có đơn vị là mét vuông
a) 1,2075 km 2 =.........m2 b) 0,452 hm2 = .........m2
c) 12,075 ha=.........m2 d) 10,241 dam2 = ........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
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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
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km2hm2dam2m2dm2cm2mm2...hm2...dam2...m2....dm2....cm2....mm2....cm2 ....km2...hm2.....dam2.....m2...dm2 trong bảng đơn vị đo diện tícha) mỗi đơn vị lớn gấp....lần dơn vị bé hơn tiếp liềnb) mỗi đơn vị bé bằng.....đơn vị lớn hơn tiếp liềnc) khi đo diện tích ruộng đất người ta còn dùng đơn vị đo là ha, mỗi ha bằng ......m2
Đọc tiếp
| km2 | hm2 | dam2 | m2 | dm2 | cm2 | mm2 |
| =...hm2 | =...dam2 | =...m2 | =....dm2 | =....cm2 | =....mm2 | =....cm2 |
| =....km2 | =...hm2 | =.....dam2 | =.....m2 | =...dm2 |
trong bảng đơn vị đo diện tích
a) mỗi đơn vị lớn gấp....lần dơn vị bé hơn tiếp liền
b) mỗi đơn vị bé bằng.....đơn vị lớn hơn tiếp liền
c) khi đo diện tích ruộng đất người ta còn dùng đơn vị đo là ha, mỗi ha bằng ......m2
| km2 | hm2 | dam2 | m2 | dm2 | cm2 | mm2 |
| =100hm2 | =100dam2 =\(\frac{1}{100}\)km2 | 100 m2 =\(\frac{1}{100}\)hm2 | ||||
tương tự đi mà làm |
a 100
b \(\frac{1}{100}\)
c 100
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5 tháng 1 2022 lúc 19:13
bài tập về đơn vị đo khối lượng và đơn vị đo độ dài lớp 5 : ( có thể là đơn vị đo diện tích hoặc số thập phân )
VD : 26m2 =...............dam2
4,81 m2 = .......... dm2
Tìm thương của phép chia biết rằng tăng số bị chia lên 24 đơn vị, tăng số chia lên 2 đơn vị thì thương ko đổi nhưng số dư thì tăng lên 4 đơn vị .
Tìm thương của một phép chia, biết rằng nếu tăng số bị chia 73 đơn vị, tăng số chia 4 đơn vị thì thương không đổi, còn số dư không đổi.
Gọi số bị chia là a
Số chia là b
Thương là q
Số dư là r
Ta có :
a+73=q.(b+4)+(r+5)
a+73 = q.b+q.4+ ( r + 5 )
a + 73 = a+4.q+5
Suy ra : 4.q =73-5
4.q=73-5
4.q=68
q=68:4
q=17
Vây thương là 17 . k cho mình nha
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