77*4.8-72*4.8怎么简便计算
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77*4.8-72*4.8怎么简便计算
77*4.8-72*4.8
=(77-72)*4.8
=5*4.8
=24;
再问: 那2.25*0.16+264*0.0225+5.2*2.25+0.225*20呢? 答对了再加10元
再答: 2.25*0.16+264*0.0225+5.2*2.25+0.225*20 =2.25*(0.16+2.64+5.2+2) =2.25*10 =22.5
再问: 4.82*0.59+0.41*1.59-0.323*5.9
再答: 4.28*0.59+0.41*1.59-0.323*5.9 =(4.28-3.23)*0.59+0.41*1.59 =1.05*0.59+0.41*1.59 题目是1,。59还是0。59啊 你确认下
再问: 题目没有错哦。。
再答: 4.28*0.59+0.41*1.59-0.323*5.9 =(4.28-3.23)*0.59+0.41*1.59 =1.05*0.59+0.41*1.59 =1.05*0.59+0.41+0.41*0.59 =(1.05+0.41)*0.59+0.41 =1.46*0.59+0.41 =1.2714
再问: 对不起,是4.82,请帮我再看看好吗。。。
再答: 4.82*0.59+0.41*1.59-0.323*5.9 =(4.82-3.23)*0.59+0.41*1.59 =1.59*0.59+0.41*1.59 =1.59*(0.59+0.41) =1.59*1 =1.59; 看错了不好意思 ,请采纳吧
再问: 不好意思再麻烦你一下:41.2*8.1+11*9.25+537*0.19
再答: 41.2*8.1+11*9.25+537*0.19 题目没问题吧
=(77-72)*4.8
=5*4.8
=24;
再问: 那2.25*0.16+264*0.0225+5.2*2.25+0.225*20呢? 答对了再加10元
再答: 2.25*0.16+264*0.0225+5.2*2.25+0.225*20 =2.25*(0.16+2.64+5.2+2) =2.25*10 =22.5
再问: 4.82*0.59+0.41*1.59-0.323*5.9
再答: 4.28*0.59+0.41*1.59-0.323*5.9 =(4.28-3.23)*0.59+0.41*1.59 =1.05*0.59+0.41*1.59 题目是1,。59还是0。59啊 你确认下
再问: 题目没有错哦。。
再答: 4.28*0.59+0.41*1.59-0.323*5.9 =(4.28-3.23)*0.59+0.41*1.59 =1.05*0.59+0.41*1.59 =1.05*0.59+0.41+0.41*0.59 =(1.05+0.41)*0.59+0.41 =1.46*0.59+0.41 =1.2714
再问: 对不起,是4.82,请帮我再看看好吗。。。
再答: 4.82*0.59+0.41*1.59-0.323*5.9 =(4.82-3.23)*0.59+0.41*1.59 =1.59*0.59+0.41*1.59 =1.59*(0.59+0.41) =1.59*1 =1.59; 看错了不好意思 ,请采纳吧
再问: 不好意思再麻烦你一下:41.2*8.1+11*9.25+537*0.19
再答: 41.2*8.1+11*9.25+537*0.19 题目没问题吧