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4 tháng 11 2018

3km2  7km2  =10 km2

2dam2     59dm2= 2,0059dam2

3hm2  6m2=30006 m2

15m2   26cm2=15,0026 m2

7m2   205cm2=7,0205 m2

31 tháng 10 2019

34dm2 =3400m2

1632m2 =16,32dam2

5ha = 0,05km2

1569 dam2 =1,569km2

56cm2 = 0,56 dm2

3605m2= 3,605m2

354ha = 3,54m2

375mm2= 0,0375dm2

Nhớ cho mik nha.Hok tốt

Bài 1: Viết các số đo diện tích sau: a) Bốn trăm linh năm đề-ca-mét vuông. b) Năm nghìn ba trăm hai mươi mốt mi-li-mét-vuông. c) Mười chín nghìn không trăm hai mươi héc – tô - mét vuông. d) Một triệu chín trăm năm mươi bảy xăng-ti-mét vuông Bài 2: Viết số thích hợp vào chỗ chấm: a) 8 dam2 = …..m2 7 hm2 = …. m2 13 km2 = …. hm2 b) 2100 dam2 = …..hm2 8000 dm2 = ….m2 50 000 m2 = ….hm2 c) hm2 = …. m2 d)...
Đọc tiếp
Bài 1: Viết các số đo diện tích sau: a) Bốn trăm linh năm đề-ca-mét vuông. b) Năm nghìn ba trăm hai mươi mốt mi-li-mét-vuông. c) Mười chín nghìn không trăm hai mươi héc – tô - mét vuông. d) Một triệu chín trăm năm mươi bảy xăng-ti-mét vuông Bài 2: Viết số thích hợp vào chỗ chấm: a) 8 dam2 = …..m2 7 hm2 = …. m2 13 km2 = …. hm2 b) 2100 dam2 = …..hm2 8000 dm2 = ….m2 50 000 m2 = ….hm2 c) hm2 = …. m2 d) km2 =….hm2 Bài 3: Viết số thích hợp vào chỗ chấm: a) 38 m2 25 dm2 = …. dm2 15dm2 9cm2 = ….cm2 1hm2 15dam2 = ….m2 b) 198 cm2 = ….dm2 ….cm2 2080 dm2 = …. m2 ….dm2 6027hm2 = …km2 ….hm2 Bài 4: Đổi cùng đơn vị đo rồi điền dấu > < = thích hợp vào chỗ chấm: 5 m2 8 dm2 …. 58 dm2  910 hm2 ….91 km2 7 dm2 5cm2 … 710 cm2  8 cm2 4 mm2 ….cm2 Bài 5: Người ta lát sàn một căn phòng hình chữ nhật có chiều dài 6m, chiều rộng 4 m bằng những mảnh gỗ hình chữ nhật có chiều dài 120cm, chiều rộng 20cm. Hỏi cần bao nhiêu mảnh gỗ để lát kín căn phòng đó? Giải ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………... Bài 6: Người ta trồng ngô trên một thửa ruộng hình chữ nhật có chiều rộng 60 m, chiều dài bằng chiều rộng. a) Tính diện tích thửa ruộng đó. b) Biết rằng, trung bình cứ 100 m2 thu hoạch được 30 kg ngô. Hỏi trên cả thửa ruộng đó, người ta thu hoạch được bao nhiêu tạ ngô? Giải ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………...
2
25 tháng 10 2021
Giúp mik với,mik cần gấp
5 tháng 11 2021

bài 1 

a]405 dam2 

b]5321 mm2

c]19020 ha2

d]1957 000 000 cm2

tạm thời thì mình chưa làm được bài 2 bạn nhé xin lỗi bạn nhiều 

28 tháng 2 2018

14ha100m2:30=46 dam2 70m2 Sai

28 tháng 2 2018

hình như Đ cả

9 tháng 11 2017

67 dam2 51m2 = 67 dam2 + Giải Cùng em học Toán lớp 5 Tập 1 Tuần 5 Tiết 2 trang 19, 20 hay nhất tại VietJack m2 = Giải Cùng em học Toán lớp 5 Tập 1 Tuần 5 Tiết 2 trang 19, 20 hay nhất tại VietJack dam2
82 dam2 7m2 = 82dam2 + Giải Cùng em học Toán lớp 5 Tập 1 Tuần 5 Tiết 2 trang 19, 20 hay nhất tại VietJack m2 = Giải Cùng em học Toán lớp 5 Tập 1 Tuần 5 Tiết 2 trang 19, 20 hay nhất tại VietJack dam2

10 tháng 12 2021

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U

9 tháng 4 2022

minh dang cần gấp

9 tháng 4 2022

A:2627 người/km2

B:72 người/km2

Tỉnh B có dân số là:

72 x 14210=1023120 (người)

Tỉnh A có dân số là:

2627x921=2395824 ( người)

=>Dân số của tỉnh b bằng số % dân số tỉnh A:

1023120/2395824 = 42,7 %