6.7×0.25+9.3÷4

问题描述:

6.7×0.25+9.3÷4

6.7×0.25+9.3÷4
=6.7×0.25+9.3×0.25
=(6.7+9.3)×0.25
=16X0.25
=4X(4X0.25)
=4X1
=4