无
*注意事项:
1.5×0.4= 0.2×5+0.5= 0.8×12.5= 0.2×5=
50×0.32= 1.25×1.6= 3×12+17×12= 100-23.65=
=0.45×(200+2)
= 0.45×200+2
= 90+2
=92
=(4×1.1)×0.25
=4×0.25+1.1×0.25
=1+0.275
=1.275
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