12.7×9.9+1.27减脱式计算

12.7×9.9+1.27减脱式计算
2025-04-08 05:20:56
推荐回答(1个)
回答1:

12.7×9.9+1.27
=12.7×9.9+1.27×1
=12.7x9.9+12.7x0.1
=12.7x(9.9+0.1)
=12.7×10
=127