3÷4= | 0.9÷3= | 1.5÷0.5= | 10×0.28= |
20÷0.4= | 1.2÷0.6= | 0.83+0.25= | 1-0.08= |
5χ-χ= | X+X= | 8×12.5= | 0.6×1.5= |
2.7+2.7= | 63÷0.9= | 0.3÷1.5= | 10÷0.2= |
0.95÷5= | 0×1.7= | 6÷5= | 1.8÷0.36= |
口算
35×7= | 23万+48万= | 228+372= | 340÷9= | 360+440= |
571万-289万= | 195-68= | 430×0+163= | 585×58≈ | 403×22≈ |
3÷4= | 0.9÷3= | 1.5÷0.5= | 10×0.28= |
20÷0.4= | 1.2÷0.6= | 0.83+0.25= | 1-0.08= |
5χ-χ= | X+X= | 8×12.5= | 0.6×1.5= |
2.7+2.7= | 63÷0.9= | 0.3÷1.5= | 10÷0.2= |
0.95÷5= | 0×1.7= | 6÷5= | 1.8÷0.36= |
35×7= | 23万+48万= | 228+372= | 340÷9= | 360+440= |
571万-289万= | 195-68= | 430×0+163= | 585×58≈ | 403×22≈ |