(4十4o一2)X25简便计算

(4十4o一2)X25简便计算
2024-11-29 19:23:14
推荐回答(4个)
回答1:

(4十40一2)X25
=42×25
=21×(2×25)
=21×50
=1050

回答2:

原式等于4x25+40x25-2x25=100+1000-50=1050

回答3:

(4十4o一2)X25
=4x25+40x25-2x25
=100+1000-50
=1050
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回答4:

(4+40-2)×25
=4×25+40×25-2×25
=100+1000-50
=1050