7.5×4点7-0点75×7简便运算

2025-03-26 07:01:02
推荐回答(2个)
回答1:

=7.5×4.7-7.5×0.7
=7.5×(4.7-0.7)
=7.5×4
=30

回答2:

7.5×4点7-0点75×7
7.5x4.7 - 7.5x0.7
=7.5x(4.7-0.7)
=7.5x4
=30