直接写得数.
0.3×0.2= | 0.42÷0.7= | 12-6.5-3.5= | 0.8-0.35= | (1.5+0.25)×4= |
7.5÷0.15= | 30.2×0.5= | 15×0.6= | 2.5×4÷2.5×4= | 0.25×4= |
直接写得数
340×5= | 375+245= | 270÷3= | += | 18×3= | 5600÷7= |
-= | 100-60÷5= | 71×2≈ | 793-305≈ | 102×6≈ | 198×5≈ |
用竖式计算.
245×35= | 307×26= | 450×70= | 64×290= |
0.3×0.2= | 0.42÷0.7= | 12-6.5-3.5= | 0.8-0.35= | (1.5+0.25)×4= |
7.5÷0.15= | 30.2×0.5= | 15×0.6= | 2.5×4÷2.5×4= | 0.25×4= |
340×5= | 375+245= | 270÷3= | += | 18×3= | 5600÷7= |
-= | 100-60÷5= | 71×2≈ | 793-305≈ | 102×6≈ | 198×5≈ |
245×35= | 307×26= | 450×70= | 64×290= |