Question

9.3ⅹ6.7十93x0.43-0.93x10简便方法？

Answer 1

9.3ⅹ6.7十93x0.43-0.93x10
=9.3x6.7+9.3x4.3-9.3
=9.3x（6.7+4.3-1）
=9.3x10
=93

Answer 2

原式＝9.3×6.7＋9.3×4.3－9.3×1
＝9.3×(6.7＋4.3－1)
＝9.3×10
＝93

Answer 3

这道题的三个乘法算式中都有数字9和3，只是小数点的位置不同，因此可以利用乘法不积变的规律将它们改写成小数点位置相同的三个乘法算式。这样就可以利用乘法分配律进行简便计算。
9.3×6.7+93×0.43-0.93×10
=9.3×6.7+(93÷10)×(0.43×10)-(0.93×10)×(10÷10)
=9.3×6.7+9.3×4.3-9.3×1
=9.3×(6.7+4.3-1)
=9.3×10
=93

Answer 4

12.6×9.3+53×0.93+0.21×93
=126×0.93+53×0.93+21×0.93
=(126+53+21)×0.93
=200×0.93
=186

Answer 5

9.3×6.7+93×0.43-0.93×10
=9.3×6.7+9.3×4.3-9.3×1
=9.3×（6.7+4.3-1）
=9.3×10
=93