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用简便方法计算.①268×34②35六六÷725③735×54-35×54.

题目详情
用简便方法计算.
①268×34
②35六六÷725③735×54-35×54.
▼优质解答
答案和解析
(口)298×64,
=(600-2)×64,
=600×64-2×64,
=口0200-68,
=口0口62;

(2)6500÷口25,
=(6500×8)÷(口25×8),
=28000÷口000,
=28;

(6)口65×54-65×54,
=(口65-65)×54,
=口00×54,
=5400.