Question

3.14ⅹ6.2+2.14ⅹ4.8-3.14简便方法？

Answer 1

简便运算是对运算律的灵活运用，加法交换律、加法结合律、乘法交换律、乘法结合律，乘法分配律。这个题目用的是乘法分配律，具体计算过程如下：题目中的2.14应该是3.14，

望采纳，谢谢！

Answer 2

3.14ⅹ6.2+2.14ⅹ4.8-3.14简便方法？
其中的2.14应该是3.14。

3.14ⅹ6.2+3.14ⅹ4.8-3.14
=3.14x（6.2+4.8-1）
=3.14x10
=31.4

Answer 3

原题2.14应该为3.14
3.14×6.2+3.14×4.8-3.14
=3.14×（6.2+4.8-1）
=3.14×10
=31.4

Answer 4

3.14ⅹ6.2+2.14ⅹ4.8-3.14
= (3.14ⅹ6.2-3.14)+(2.14ⅹ4.8)
=3.14x(6.2-1)+2.14x(5-0.2)
=3.14x5.2 +10.7 -0.428
=3.14x(5+0.2)+10.7-0.428

=15.7 +0.628 -0.428+10.7
=15.7+0.2+10.7
=26.6

Answer 5

3.14×6.2+2.14×4.8-3.14
=3.14×（6.2-1）+2.14×4.8
=3.14×5.2+2.14×4.8
=（2.14+1）×5.2+2.14×4.8
=2.14×5.2+1×5.2+2.14×4.8
=2.14×（5.2+4.8）+5.2
=2.14×10+5.2
=21.4+5.2
=26.6