7.4x1.01的简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 14:41:54
原式=0.74÷【37/12×3/4+(23/4-8/3)】=74/100÷(37/16+69/12-32/12)=37/50÷(37/16+37/12)=37/50×16/37+37/50×12/3
3.6x1.25十0.32/0.4=0.45x8x1.25+16/20=9/20x1+16/20=25/20=5/4
1.(1010-906)×(65+15)=104×80=83202.(639-71×9)÷167=0÷167=03.678-(95+78)+35=678-78-95+35=600-60=5404.48
8.9X9.9+11X0.99=89X0.99+11X0.99=0.99X(89+11)=0.99X100=993.46X1.23+3.46X4.56+5.79X6.54=3.46X(1.23+4.5
9.6x(1.4+4.5-1.8+4.9+1)=96
我按照侧着看的顺序来吧:第一道:62.5%=5/8,所以第一题就是5/8(4/3+1/3-1)=5/8x2/3=5/12第二道:把/0.8提前不影响计算所以实际就是21.6-16=5.6第三道:除以7
(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
再答:给个釆纳,新年快乐再问:祝你新年快乐
1x1\3=1/2*(1/1-1/3)2x1\4=1/2*(1/2-1/4).1x1\3+2x1\4+3x1\5+.+2006x1\2008=1/2(1/1-1/3+1/2-1/4+1/3-1/5+.
(0.8+0.8)×7.5×1.25=0.8×7.5+1.25×0.8
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
7.2x1.47+14.7x0.28=(7.2+2.8)x1.47=10x1.47=14.7