一点87一 7×9点9+0点187简便计算

2025-01-21 04:52:23
推荐回答(5个)
回答1:

1.87×9.9+0.187
=1.87×9.9+1.87×0.1
=1.87×(9.9+0.1)
=1.87×10
=18.7

回答2:

1.87-7×9.9+0.187
=(1.87+0.187)-7×(10-0.1)
=2.057-(7×10-7×0.1)
=2.057-70+0.7
=-67.243

回答3:

解题过程:1.87×99+0.187+31.4×0.032 =1.87×(99+0.1)+31.4×0.032 =185.317+1.0048 =186.3218

回答4:

1.87-7×9.9+0.187
=1.87×1.1-63×1.1
=1.1×(-61.13)
=-67.243.

回答5:

你这个题应该说可能抄错了哟
1.87-7×9.9+0.187
=1.7×1.1-63×1.1+1.1×0.17
简便过程不明显