số 160                                                                                                                                                                                                                                         nhớ cho 10 h đấy

1. What ..........did............ you do last Sunday ?

2. I stayed at home and looked ..........after.............. my younger brother yesterday

3. He lives in a small village in the mountains so he never .......feels............. worried about traffic jams

4. You should remember to walk .............across............... the streets at the zebra crossings

5. Does your bike ever ..........break............... down on the way to school ?

6. We must always obey traffic ...........vehicles............. for our safety

7. How far is ...........it........... from your house to the bus stop ?

8> There did not use to be many ...........rules................ on the roads in my home town

9. He used to .......ride................. a tricycle when he was three years old

10. Now there are more traffic ..............accidents............... than there used to be in this city

goi so can tim la ab 

khi do so moi la 1ab0

ab x 50 = 1ab0

ab x50 =1000 + ab x10

ab x [ 50 - 10 ] = 1000

ab x 40 = 1000

ab = 1000 : 40

ab = 25

vay so can tim la 25

           Dap So: 25

11 lần số bé là:106.16+106.8=212.96

số lớn là : 106.16-212.96/11=86.8