作业帮0.8乘以33乘以1.25简便算
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/16 03:08:09
33乘以1.03简便计算=33x1+33x0.03=33+0.99=33.99（1.25加1.25加1.25）乘以5加8.75乘以15简便计算.=1.25x3x5+8.75x15=1.25x15+8.
33乘以1.03=33*(1+0.03)=33*1+33*0.03=33+0.99=33.99（1.25+1.25+1.25）*5+8.75*15=3.75*5+8.75*(10+5)=18.75+8
101×18.2-1.25×18.2×0.8=（101-1）×18.2=100×18.2=1820本题已解答,请点右下角“采纳答案”,支持一下.
99×22+33×34=33×66+33×34=33×（66+34)=33×100=3300
1.25乘以0.98乘以0.8=1.25乘以0.8乘以0.98=1乘以0.98=0.98
1.25×320×25＝1.25×80×4×25＝100×100＝100006.89×101-6.89＝6.89×（101-1）＝6.89×100＝68916×0.25×1.25＝8×1.25×（2×
33*(2*0.88+0.24)=33*[2*(1-0.12)+0.24]=33*2
0.25*1.25*32=0.25*4*1.25*8=1*10=10
=5.2×1111+1111×6×0.8=5.2×1111+1111×4.8=(5.2+4.8)×1111=10×1111=11110
48×0.25×1.25=（40+8）×0.25×1.25=40×0.25×1.25+8×0.25×1.25=12.5+2.5=15
0.25乘以3.2乘以1.25=0.25x3.2x1.25=1/4x4x0.8x1.25=1x1=1
0.8×（12.5+1.25+125）=0.8×12.5+0.8×1.25+0.8×125=10+1+100=111
注意到1.25*8=101.25*0.8=1那么3.2*1.25+4.8*12.5=4*0.8*1.25+6*0.8*12.5=4+6*10=64
0.15×0.8×12.5+8×3×0.125=1.5×8×0.125+8×3×0.125=（8×0.125）×（1.5+3）=4.5
1.2*1.25-0.2*1.25=1.25*(1.2-0.2)=1.25*1=1.25
48x(1/4)x(5/4)分母都约去,只剩下分子相乘就是了!
1.25*2.5*3=1.25*2.5*4*8=(4*2.5)*(8*1.25)=10*10=100
（1.25*0.8）*（1.25*0.8）*.*（1.25*0.8）=1也就是1的40次方=1