Question

12.5x1.36x0.82x10.1。用简便方法怎么计算？

Answer 1

原式＝12.5×1.36×0.82×10.1
＝12.5×1.36×［0.82×(10+0.1)］
＝12.5×1.36×［8.2+0.082］
＝12.5×1.36×8.282
＝12.5×(1+0.4-0.04)×8.282
＝［12.5+5+0.5］×8.282
＝17×8.282
＝8.282×(20-3)
＝8.282×20-8.282×3
＝165.64-24.846
＝140.794

Answer 2

12.5X1.36X0.82X10.1
=(12.5X0.8)X1.36X10.1+(12.5X0.02)X1.36X10.1
=10X1.36X10+10X1.36X0.1+0.25X1.36X10.1
=136+1.36+10.1X1.36X1/4
=137.36+10.1X0.34
=137.36+3.434
=140.794

Answer 3

是你让我承认一点反流成语，零点82×1点4.02洁面