解方程:
(1)x+x=50 | (2)x=2.5 |
直接写出得数. 1÷3=________; | -=________; | 33-22=________; | 2-=________; |
4.8÷6=________; | 2.5×=________; | -+=________; | 0.8-=________. |
(1)x+x=50 | (2)x=2.5 |
直接写出得数. 1÷3=________; | -=________; | 33-22=________; | 2-=________; |
4.8÷6=________; | 2.5×=________; | -+=________; | 0.8-=________. |