39乘89减8o1的简算方法
39乘89减8o1的简算方法 -
＝3560-（89+801）＝3560-890 ＝3560-900+10 ＝2670
=3.76*（100+1）3.76*100+3.76*1 =376+3.76 =379.76
＝3560-（89+801）＝3560-890 ＝3560-900+10 ＝2670
=3.76*（100+1）3.76*100+3.76*1 =376+3.76 =379.76
301*99 =301*100-301 =30100-301 =29799
57*101 =57*(100 1)=57*100 57*1 =5700 57 =5757
2o1x37-37的简算是? -
2o1x37-37=(201-1)x37=200x37=7400
=0.99X(100-1)=0.99x100一0.99X1=99一0.99=98..01
7.8×1.o1-78x0.1简算 -
7.8x1.01-78x0.1 =78x0.101-78x0.1 =78x（0.101-0.1）78x0.001 =0.078
2.5x101-2.5 =2.5x(101-1)=2.5x100 =250
5.6X1.O1的简算 -
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45×201 =45×(200+1) =45×200+45×1 =9000+45 =9045 希望能帮到你，请采纳正确答案，点击【采纳答案】，谢谢^_^