72.4-72.4×0.98怎么巧算?

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72.4-72.4×0.98怎么巧算?

72.4-72.4×0.98怎么巧算?
72.4-72.4×0.98怎么巧算?

72.4-72.4×0.98怎么巧算?
=72.4×(1-0.98)
=72.4-0.02
=1.448

72.4x(1-0.98)
=72.4x0.02
=1.448

=72.4×(1-0.98)
=72.4-0.02
=1.448

=72.4*(1-0.98)=72.4*2/100
=1.48

72.4*5*1-72.4*0.98=72.4*(1-0.98)=72.4*0.02=1.448