B1 : Thay x để số 43x là số chia hết cho 2 , 5 :

A, 5

B , 0

C , 8

D ,4

B2 : Số nào là số ng.tố :

A, 46

B, 1367129

C, 41

D, 54

B3 : 84 p/tích ra TSNT là 84 = 2².3.7

B4 : Đúng ghi Đ , sai ghi S : Đ S

- Nếu 1 số chia hết cho 9 thì chia hết 3 Đ

- Mọi số ng.tố đều là số lẻ S

B5 : Ko làm phép chia hãy đoán xem tổng này chia hết cho 9 ko ? tại sao ?

A = 342 + 5013 + 720

=> A = ( 342 + 5013 ) + 720

=> A = 5355 + 720

=> A = 6075

=> A \(⋮\) 9 ( vì 6+0+7+5 = 18, mà 18 \(⋮\) 9 )

KL: Vậy A \(⋮\) 9

bn có thể gửi lại câu hỏi ko

chứ như trên thì ko biết nên phải điền vào chỗ nào

Hello, I'm Trang. I live with my family at 20/58, on Cau Am street, Van Phuc, Ha Dong, Ha Noi. Van Phucs is great place, it is a silk village! I usually do morning exercise by go jogging around Van Phuc. I love Van Phuc and I love going to the beach. Last summer, I went to Sam Son. I had so much fun. But home still the best. At the weekend, I often at home. I always play video games and go to the library. This weekend, I think I will chance the plan: I will go to Ba Vi - my hometown - to relax after a five - tired - day. I think it will be really cool!

I.Fill in the blank

CIRC_E →_____CIRCLE_____ C_UGH →___COUGH__

_INGO →____BINGO_____ CAN_LE→____CANDLE____

GR_UP →___GROUP___ SEA_OOD →_SEAFOOD_

FE_ER →_____FEVER_____ ENJ_Y →___ENJOY___

COM_LETE →_COMPLETE_ PART_ →____PARTY_____

II.Defeat the Goal Keeper.

1. .........? - She often has breakfast at 6 AM

A.What does Sara often to at 6 AM

B.What time does Sara often have breakfast

C.When does Sara often have breakfast D.All are correct

2.Who are all ....... people?

A. this B. that C. those D.them

3. Shirt, trousers and skirts are ..........

A.dresses B. clothes C.blouse D. wear

4. Close the door ...... It's cold here.

A.∅ B. up C. to D. have

5.Odd one out

A. Lesson B. History C.Arts D. Maths

7.Which pencil do you want? - ......

A.That one B.That's it C.Here is D.Yes,please