如题所述
你好 9.8×25简便运算如下
9.8×25
=(10-0.2)×25
=10×25-0.2×25
=250-5
=245
满意请采纳
谢谢
祝你学习进步
9.8×25
=(10-0.2)×25
=10×25-0.2×25
=250-5
=245
满意请采纳
谢谢
祝你学习进步
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第1个回答 2020-07-11
9.8*25
=(9+0.8)*25
=9*25+0.8*25
=225+20
=245
=(9+0.8)*25
=9*25+0.8*25
=225+20
=245
第2个回答 2020-07-11
9.8×25
=(10-0.2)×25
=10×25-0.2×25
=250-5
=245
=(10-0.2)×25
=10×25-0.2×25
=250-5
=245