第1个回答 2022-09-18
27.9×0.37+2.79×6.3
=27.9×（0.37×10）+（2.79×10）×6.3
=27.9×（3.7+6.3）
=279本回答被网友采纳
=27.9×（0.37×10）+（2.79×10）×6.3
=27.9×（3.7+6.3）
=279本回答被网友采纳
第2个回答 2023-01-21
27.9×0.37+2.79×6.3
＝27.9×0.37+27.9×0.63
＝27.9×（0.37+0.63）
＝27.9×1
＝27.9
＝27.9×0.37+27.9×0.63
＝27.9×（0.37+0.63）
＝27.9×1
＝27.9
27.9ⅹ0.37+2.79ⅹ6.3用简便运算?
27.9ⅹ0.37+2.79ⅹ6.3用简便运算？ 2.79*10*0.37+2.79*6.3=2.79*（1*10*0.37+1*6.3）=2.79*（3.7+6.3）=2.79*10=27.9
27.9ⅹ0.37+2.79ⅹ6.3用简便运算
27.9×0.37+2.79×6.3 =27.9×（0.37×10）+（2.79×10）×6.3 =27.9×（3.7+6.3）=279
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