Question

99.99×111.1+666.7×33.33简便计算.

Answer 1

99.99×111.1+666.7×33.33
=99.99×111.1+666.6×33.33+33.33*0.1
=99.99×111.1+111.1*6*33.33+33.33*0.1
=99.99×111.1+111.1*99.99*2+33.33*0.1
=111.1*99.99*3+33.33*0.1
=333.3*99.99+33.33*0.1
=33.33*999.9+33.33*0.1
=33.33*（999.9+0.1）
=33.33*1000
=33330

Answer 2

=(99.99÷3）×（111.1×3）+666.7×33.33
=33.33×333.3+666.7×33.33
=（666.7+333.3）×33.33
=1000×33.33
=33330