9.16乘1.76目录
9.16x1.75-9.16
【提取公因数9.16】
=9.16x(1.75-1)
=9.16x0.75
【把0.75拆分成3个因数】
=9.16x5x0.5x0.3
=45.8x0.5x0.3
=22.9x0.3
=6.87
9.16x1.75-9.16=9.16×(1.75-1)=9.16×0.75=6.878.5x9.9 0.85=0.85×99 0.85=0.85×(99 1)=0.85×100=850.6x0.13 0.6x0.13=(0.6 0.6)x0.13=1.2x0.13=0.156
解:9.16*7.8 21*0.916=9.16(7.8 2.1)
=9.16*9.9
=9.16(10--0.1)
=91.6--0.916
=90.684。