直接写得数．
| 4-1.08= | 12- = |  = |  = |
 = |  = | 3.9÷0.01= | 1154+846= |
口算
| 65+37×0= | 28×0÷54= | 4×28×25= | 100×3÷100×3= |
| 25×28= | 50-25÷5= | 2.7×0.03= | 2.4÷0.06= |
| 4.2÷3= | 1×0.94= | 1.2×0.8= | 0.39÷1.3= |
1- = |  + = |  - = | + = |
直接写得数．
| 4-1.08= | 12-= | = | = |
| = | = | 3.9÷0.01= | 1154+846= |
| 65+37×0= | 28×0÷54= | 4×28×25= | 100×3÷100×3= |
| 25×28= | 50-25÷5= | 2.7×0.03= | 2.4÷0.06= |
| 4.2÷3= | 1×0.94= | 1.2×0.8= | 0.39÷1.3= |
| 1-= | += | -= | += |
=
．