Question

Tính nhanh

1) 34.123+34.77

 

 

 

2)16.32+67.16+16

 

 

3)19.87+14.19-19

4) 33.179-78.33-33

5)24.43+24.47-240

6)45.39+65.39-390

Answer 1

1) 34.123+34.77

=34(123+77)

=34.200

=6800

tíc mình nha