如题所述
3.75+2.43+1.25+0.57
=(3.75+1.25)+(2.43+0.57)
=5+3
=8
=(3.75+1.25)+(2.43+0.57)
=5+3
=8
温馨提示:答案为网友推荐,仅供参考
第1个回答 2020-04-27
3.75+2.43+1.25+0.57
=3.75+1.25+2.43+0.57
=(3.75+1.25)+(2.43+0.57)
=5+3
=8
=3.75+1.25+2.43+0.57
=(3.75+1.25)+(2.43+0.57)
=5+3
=8
第2个回答 2020-04-27
3. 75十1. 25十(2. 43十0. 57)=8
第3个回答 2020-04-27
加法交换律和结合律的题目
3.75+2.43+1.25+0.57
=3.75+1.25+(2.43+0.57)
=5+3
=8本回答被网友采纳
3.75+2.43+1.25+0.57
=3.75+1.25+(2.43+0.57)
=5+3
=8本回答被网友采纳
第4个回答 2020-04-27
原式=(3.75+1.25)+(2.43+0.57)
=5+3
=8
=5+3
=8