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1.30×(1/5+1/3) 2.2/3×5/7+2/3×2/7 3.3/4×1/9+1/4÷9 4.5-(6/7÷3/

来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/13 18:22:08
1.30×(1/5+1/3) 2.2/3×5/7+2/3×2/7 3.3/4×1/9+1/4÷9 4.5-(6/7÷3/14+3/16)求大神帮助
1.30×(1/5+1/3) 2.2/3×5/7+2/3×2/7 3.3/4×1/9+1/4÷9 4.5-(6/7÷3/
1.30×(1/5+1/3) =30×1/5+30×1/3 =6+10 =16 2.2/3×5/7+2/3×2/7 =2/3×(5/7+2/7) =2/3×1 =2/3 3.3/4×1/9+1/4÷9 =(3/4+1/4)×1/9 =1×1/9 =1/9 4.5-(6/7÷3/14+3/16) =5-4-3/16 =1-3/16 =13/16