438乘以57+313乘以43+125乘以33有什么简便算法?

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438乘以57+313乘以43+125乘以33有什么简便算法?438乘以57+313乘以43+125乘以33有什么简便算法?438乘以57+313乘以43+125乘以33有什么简便算法?438*57+

438乘以57+313乘以43+125乘以33有什么简便算法?
438乘以57+313乘以43+125乘以33有什么简便算法?

438乘以57+313乘以43+125乘以33有什么简便算法?
438*57+313*43+125*33
=438*57+313*+(100-57)+125*33
=438*57-313*57+31300+125*33
=125*57+31300+125*33
=125*(57+33)+31300
=11250+31300
=42550