a) Phân số 3/4 viết dưới dạng số thập phân là: A. 3,4 B. 0,34 C. 0,75 D. 4,3 b) Tỉ số phần trăm của 2 và 2,5 là: A. 2% B. 0,8% C. 8% D. 80% c) Số thích hợp điền vào chỗ chấm để 3 phút 24 giây = … phút là: A. 3,24 B. 3,4 C. 32,4 D. 0,24 d) Diện tích xung quanh của hình lập phương cạnh 3,2cm là: A. 40,96 cm2 B. 61,44 cm2 C. 32,768 cm2 D. 20,48cm2

6 Cho dãy số 2,1 ; 4,1; ... ; 2010,1 ; 2012,1. Hỏi dãy số này có mấy số hạng?

các bn lm giúp mình vs mình đg cần gấp cảm ơn nhiều

Bài 2 Bài ít điểm nhiều 😀😀😀😀😀😀😀😀😀😀

1 Hãy nêu giá trị của chữ số 5 trong các số sau đây: a, 2050073 b, 6,43256 c, 350/1000 d, 512,341 e, 5 2 Tính nhanh: 1,02 + 2,03 + 3,04 + 4,05 + ...+ 8,09 + 9,1 +.....+ 98,99. 3 Tính nhanh: 2/3*5+2/5*7+2/7*9+.........+2/1999*2001 4 Tính nhanh: 1978*1979*1980*21+1958/1980*1979-1978*1979 5 Tìm X biết: 20,20x1 < 202012/10000 giải thích nx nha

'-' Vẽ anime khó hiểu :) Yêu cầu: - Digi có line, màu - Traid cũng vậy :)) - Nếu traid thì ko ô li, ko kẻ ngang - Không vi phạm luật ________________________________ P/S: Kiểu nhớ mình quá nên tính làm điểm sáng đây mà :>>

Nêu Đặc điểm cấu tạo ngoài chứng tỏ ếch cũng thích nghi đời sống trên cạn

1. I met a friend . Her daughter is a famous singer. -> I met a friend………………………………………………………………………………………………… 2. This is the boy. His father lived in London three years ago. -> This is the boy……………………………………………………………………………………………….. 3. Jack is my new friend. His parents come from China. -> Jack is my new friend……………………………………………………………………………………….. 4. The girl is studying maths in this classroom. Her mother went on abroad last year. -> The girl……………………………………………………………………………………………………… 5. That is the man. His family moved to the flat two months ago. -> That is the man……………………………………………………………………………………………… 6. I spoke to the girl. His mother is a famous doctor. -> I spoke to the girl…………………………………………………………………………………………… 7. We met the boy . His invention was famous in the world. -> We met the boy……………………………………………………………………………………………… 8. I’ll introduce you to the man. His support for the project is essential -> .I’ll introduce you to the man………………………………………………………………………………... 9. Harry is an engineer. His wife has just given birth to twins -> Harry is an engineer…………………………………………………………………………………………. 10. This is the woman. Her daughter is a director of a big company. -> This is the woman……………………………………………………………………………………………. V. Where 1. I recently went back to Paris. I was born there nearly 50 years ago. -> I recently went back to Paris…………………………………………………………………………………. 2. That's the palace. The Queen lives in it.  -> That is the palace…………………………………………………………………………………………. 3.  Here is a postcard of the village. We spent three days there. -> Here is a postcard of the village………………………………………………………………………….. 4. This is the hotel. He has stayed there for three weeks. -> This is the hotel…………………………………………………………………………………………… 5. Paris is the capital. We lived there 5 months ago. -> Paris is the capital ………………………………………………………………………………………... 6. That's the house. I was born in it.   -> That’s the house………………………………………………………………………………………….. 7. This is a big class . There are 50 students studying in it. -> This is a big class………………………………………………………………………………………… 8. Hoa Binh is a small village. I was born and grew up there. -> Hoa Binh is a small village……………………………………………………………………………… 9. That is a flat. He met Jane there 4 years ago. -> That’s a flat………………………………………………………………………………………………

a, 98675-y=30546+29218 b,4862+y=100000-23885

Bài 1 nhanh ạ bài ít đỉm nhìu ne