1.

1.8-2.2=

-0.14+0.17=

-2.18-1.54=

-7.8+5.6=

2.

-2/3 + 1/6 =

7/9 - 1/6=

-3/8 - 1/2=

3.

-(5.4)+(-2.8)+4.6-(+15.2)=

завершите предложения с правильными окончаниями признака:

пример:he is responsible for music,isn't he?

1.they were happy to get the invitation letter,.....?

2.yesterday your friends went to the cinema,.....?

3.the group pf students won't stay in the hotel,.....?

4.his collection of stamps was the best,....?

5.the head teacher didn't write the letter,.....?

6.we can arrange a date and time right now,.....?