问题
解答题
3
|
答案
3
÷4+51×25%+0.25×2525%，3 4
=3
×3 4
+51×25%+0.25×2525%，1 4
=3.75×0.25+51×0.25+0.25×25.25，
=（3.75+25.25+51）×0.25，
=80×0.25，
=20．
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3
|
3
÷4+51×25%+0.25×2525%，3 4
=3
×3 4
+51×25%+0.25×2525%，1 4
=3.75×0.25+51×0.25+0.25×25.25，
=（3.75+25.25+51）×0.25，
=80×0.25，
=20．