Question

0.8888x0.4-0.1111x0.2简便计算？

Answer 1

0.8888x0.4-0.1111x0.2
= 8x0.1111x0.4 - 0.1111x0.2
= 0.1111x(8x0.4-0.2)
=0.1111x(3.2-0.2)
= 0.1111x3
=0.3333

Answer 2

计算：
0.8888×0.4-0.1111×0.2
=0.1111×(8×0.4)-0.1111×0.2
=0.1111×(3.2-0.2)
=0.1111×3
=0.3333