41.2*8.1 11*9.25 53.7*1.9

56.5-41.2+43.5-58.8=（56.5+43.5）-（41.2+58.8）=100-100=0祝你学习进步,更上一层楼!不明白及时追问,满意敬请采纳,O(∩_∩)O谢谢~~再问：O(∩_∩

41.2×8.1+4.12×23-412×0.04=41.2×8.1+41.2×2.3-41.2×0.4=41.2×（8.1+2.3-0.4）=41.2×10=412

41.2*8.1+11*1.25+53.7*1.9=41.2*8.1+11*1.25+(41.2+12.5)*1.9=41.2*8.1+41.2*1.9+11*1.25+12.5*1.9=41.2*(

101×9.25-9.25=(101-1)×9.25=100×9.25=925

41.2*8.1+11*9.25+53.7*1.9=41.2*8+41.2*0.1+10*9.25+1*9.25+53.7*2-53.7*0.1=537.5

537.5

41.2×8.1+11×9.25+537×0.19，=333.72+101.75+102.03，=435.47+102.03，=537.5．

41.2*8.6+3.9*41.2-21.2*12.5=41.2*（8.6+3.9）-21.2*12.5=41.2*12.5-21.2*12.5=（41.2-21.2）*12.5=20*12.5=25

56.5-41.2+42.5-58.8=（56.5+42.5）-（41.2+58.8）=99-100=-1如果本题有什么不明白可以追问,再问：答案等于0呀....--再答：你看你题目是否写错了再问：嗯

41.2×8.1+537×0.19观察发现：8.1和0.19有些门道,通过变化可以变成0.81+0.19=1=412×0.81+537×0.19把537个0.19可以看作412个0.19加上125个0

41.2*8.1+11*9.25+53.7*1.9=41.2*8.1+11*9.25+(41.2+12.5)*1.9=41.2*8.1+41.2*1.9+12.5*1.9+11*(1.25+8)=41

41.2×8.1+11×1.25+53.7×1.9=41.2*(8+0.1)+12.5+1.25+53.7*(2-0.1)=329.6+4.12+12.5+1.25+107.4-5.37=449.5+

4.8×9.25×7.6=﹙4+0.8﹚×﹙9+0.25﹚×7.6=﹙4×9+4×0.25+0.8×9+0.8×0.25﹚×7.6=﹙36+1+7.2+0.2﹚×7.6=44.4×7.6=﹙44+0.

山上都比较冷,建议带厚外套.

537.5再问：我也知道可是不知道算式再答：十么算式（你能说明白点再问：当然是怎么算的，过程再答：41.2*8.1+11*9.25+53.7*1.9=记住先乘除后加减先三个乘法分别先乘出来最后将这三个

=41.2*8+4.12+92.5+9.25+53.7*2-5.37=329.6+4.12+101.75+107.4-5.37=96.38+107.4+333.72=203.78+333.72=537

你好!41.2*8.1+11*9.25+53.7*1.9=41.2*8.1+11*9.25+(41.2+12.5)*1.9=41.2*8.1+41.2*1.9+12.5*1.9+11*(1.25+8)

41.2*8.1+11*9.25+537*1.19=4.12*（10-1）*9+（10+1）*9.25+5.37*（100+20-1）=（41.2-4.12）*9+92.5+9.25+537+107.

原式=41.2-9.5*0.9*2*2/0.9=41.2-9.5*4=41.2-38=3.2原式=999*111+999*889=999*（111+889）=999*1000=999000

一位小数9.3