直接写出得数.
20+30= | 12×3= | 3.5-0.2= | 33÷1.1 | 99×6= |
0.65+2.35= | 0.1×0.03= | 651-105= | 2-= | += |
1÷= | ×26= | ÷= | -= | 12÷×0= |
2+= | ×= | ++= | ××5= | (0.27+0.9)÷0.9= |
怎样算简便就怎样算.
9.8+99×9.8 | 1.25×88 | 4.65×32+2.5×46.5+0.465×430. |
20+30= | 12×3= | 3.5-0.2= | 33÷1.1 | 99×6= |
0.65+2.35= | 0.1×0.03= | 651-105= | 2-= | += |
1÷= | ×26= | ÷= | -= | 12÷×0= |
2+= | ×= | ++= | ××5= | (0.27+0.9)÷0.9= |
9.8+99×9.8 | 1.25×88 | 4.65×32+2.5×46.5+0.465×430. |