| 直接写出得数. 327+199= | 10-0.98= | 3×101= | 1.616÷4= |
1- - = | ×0× = | 5-5×0.6= | 0.19+1.87+0.81= |
÷ × = | 7.8×4-4×7.8= | 12×( + )= | 44÷13×26÷22= |
| 327+199=526; | 10-0.98=9.02; | 3×101=303; | 1.616÷4=0.404; |
1- - =0; | ×0× =0; | 5-5×0.6=2; | 0.19+1.87+0.81=2.87; |
÷ × =0.9; | 7.8×4-4×7.8=0; | 12×( + )=13; | 44÷13×26÷22=4. |
分析:根据运算法则及运算顺序进行计算,能简算的要简算.
点评:口算时,要灵活运用所学知识快速准确的进行计算.
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