直接写出得数
651-105= | 0.65+2.35= | 0.1×0.03= | (0.27+0.9)÷0.9= |
2-= | = | 64÷0.08= | = |
= | = | 10--0.875 | = |
写出下面各数的近似数(得数保留两位小数)
3.095≈________ | 12.996≈________ | 26.764≈________. |
用递等式计算.
1.56-0.45+0.55 | 3.9+0.56+6.1+0.44 | 3.2+9.6÷0.32 |
3.12+3.12×99 | 1.25×3.2×25 | 4.75×[60÷(3.24-3.04)]. |