39 + 61 100         245 + 27 272

100 - 73 27

852 - 29 823

a) Các hình tam giác là: EAD, EGD, EGC, EBC, EDC

b) Các hình tứ giác là: AEGD, AECD, EBCG, BEDC, ABCD

a; Các hình tam giác trong hình vẽ bên là:

AED; BCE; CEG; CDE; DEG; 

b; Các hình tứ giác trong hình vẽ bên là:

 ABCD; ADGE; ADCE; BCGE; BCDE 

a : Đ

b: S

c; S

d; S

a) Đúng

b) Sai

c) Sai

d) Sai

Mình chưa hiểu cho lắm?

1. - My name is Mai

2. - M - A - i

3. - I from Viet Nam

4. - My mother name's Phuong

5. No, I don 't

1. - My name is Thao

2. - T-h-a-o

3. - I'm  from Viet Nam

4. - My mother name's Tuyet

5. No, I don 't

1. - It is yellow

2. - he is five years old

3.- she is from japan

4. - yes, l do

5. - his name's Ben

( Em gửi cô ạ!)

1 It's yellow

2 She is five years old

3 She is from Japan

4 Yes, they do

5 His name is ben 

1. My name is Pencil.

2. It's P E N C I L.

3. I'm 12 years old.

4. I'm from Vietnam.

1 . My name's Chi Dung

2 . That's C - H - I  D - U - N - G

3 . I'm 18 years old

4 . I'm from VietNam

1. Her name is Emma.

2. She is 6 years old.

3. He is from The United Kingdom.

4. No, they don't.

1 . Her name's Emma

2 . She is 6 years old

3 . He is from The United Kingdom

4 . No , they don't

Câu hỏi của em là gì?

1. My name's Vy.    2. I'm 11 years old.         3. My hobby is reading books.                  4. My mother's hobby is cooking.

1. My name is Hai.

2. I am 12 years old.

3. My hobby is reading book.

4. Her hobby is cooking.