33X1.03简便计算,作业帮
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 01:33:17
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59×21=60×21-21=126-21=105再答:我二年级的再答:初中再问:谢谢大家再答:给个平嫁再答:评价再问:100℅再答:右上角
3.6x1.25十0.32/0.4=0.45x8x1.25+16/20=9/20x1+16/20=25/20=5/4
54.9x0.38=549x38x0.001=20.862再问:那4.05+37.85怎么简便计算?
9.6x(1.4+4.5-1.8+4.9+1)=96
1.2分之1+4分之3-10分之3=10/20+15/20-6/20=(10+15-6)/20=19/202.10分之9-5分之1-2分之1=9/10-2/10-5/10=(9-2-5)/10=2/1
(38+1/36)x1/37=[(37+1)+1/(37-1)]*/37=[(37+1)(37-1)+1]/36*1/37=(37^2-1+1)/36*1/37=37^2/36*1/3737/36
8.8x1.25=(8+0.8)x1.25=8x1.25+0.8x1.25=10+1=11
12.56-5.1×1.8=12.56-(5+0.1)×1.8=12.56-9-0.18=3.56-0.18=3.38
解58.3x1.6+1.6x41.7=1.6×(58.3+41.7)=1.6×100=160
1.1x1.1x1.1-1.1x1.1-0.1=1.1×1.1×(1.1-1)=1.1×1.1×0.1-0.1=0.121-0.1=0.021
小数化成粉属性是,除法化成乘以倒数,然后再约分就行了.
(0.8+0.8)×7.5×1.25=0.8×7.5+1.25×0.8
解题思路:化简小括号后,变为依次大1/2的等差数列。问题可求。解题过程:varSWOC={};SWOC.tip=false;try{SWOCX2.OpenFile("http://dayi.prced
41.2x8.1+11x1.25+53.7x1.9=41.2x8.1+11x1.25+(41.2x1.9+12.5x1.9)=41.2x(8.1+1.9)+1.25x(11+19)=412+37.5=
您好:35.55x1.4+(25.2-24.57)=49.77-24.57+25.2=25.2+25.2=50.48/15÷【8/3-(7/4+5/6)】=8/15÷(32/12-21/12-10/1
4.9x(1+0.02)=4.9+0.049*2=4.998
1.原式=5/5*16*21/7=1*16*3=48.2.原式=5/9*5/6+5/9+1/6=5/9*(5/6+1/6)=5/9(前两题是两分数相乘,可把分母或分子交换,如a/b*c/d=a/d*c
396-96-172-28=(396-96)-(172+28)=300-200=100125*24=125*8*3=1000*3=300026*15=(20+6)*15=20*15+6*15=300+
7.2x1.47+14.7x0.28=(7.2+2.8)x1.47=10x1.47=14.7