1.0.99×27 2.3.19+6.45-3.19+3.55
问题描述:
1.0.99×27 2.3.19+6.45-3.19+3.55
要简便运算
1.0.99×27
2.3.19+6.45-3.19+3.55
答
解
1.0.99×27
=(1-0.01)×27
=1×27-0.01×27
=27-0.27
=26.73
2.3.19+6.45-3.19+3.55
=(3.9-3.19)+(6.45+3.55)
=0+10
=10