2.5×2.4÷1.4+4.8÷2.1×2.5的简便运算

问题描述:

2.5×2.4÷1.4+4.8÷2.1×2.5的简便运算

=2.5x0.4x6÷2÷0.7+2.5x0.4x12÷3÷0.7 =3÷0.7+4÷0.7=10