请用简便方法进行计算.0.78×101 1.96×99 36.4×4.6+36.4×5.4 100.1×101-100.1
(1)0.78×101 =0.78×(100+1) =0.78×100+0.78×1 =78+0.78 =78.78; (2)1.96×99 =1.96×(100-1) =1.96×100-1.96×1 =196-1.96 =194.04; (3)36.4×4.6+36.4×5.4 =(4.6+5.4)×36.4 =10×36.4 =364; (4)100.1×101-100.1 =100.1×(100-1) =100.1×100 =10010. |
温馨提示:答案为网友推荐,仅供参考