怎样算简便就怎样算. 356-199=________; | (+-)×12=________; | 32×12.5×0.25=________; |
+++=________; | ×0.11+0.11×=________; | ÷[(-)]. |
解方程和解比例.
x+x= | 21:x=4:. |
解方程.
X÷= | 2X-0.8= | 20%X+35%×20=19. |
下面各题怎样算简便就怎样算:
48×9.9+48÷10 | . |
怎样算简便就怎样算. 356-199=________; | (+-)×12=________; | 32×12.5×0.25=________; |
+++=________; | ×0.11+0.11×=________; | ÷[(-)]. |
x+x= | 21:x=4:. |
X÷= | 2X-0.8= | 20%X+35%×20=19. |
48×9.9+48÷10 | . |