Question

5.2-5.2×0.8的简便运算？

Answer 1

因为两个乘式中都有5.2所以运用乘法分配律就是5.2×（1-0.8）=5.2×0.2=1.04

Answer 2

5.2-5.2×0.8
=5.2×（1-0.8）
=5.2×0.2
=1.04

Answer 3

=5.2×(1-0.8)
=5.2×0.2
=1.04