72x102简便运算 0.43x5.3 5.7x0.53怎样简便运算

0.43x5.3 5.7x0.53怎样简便运算  

0.43x5.3 5.7x0.53怎样简便运算

0.43x5.3+ 5.7x0.53
=0.43×5.3+0.57×5.3
=5.3×（0.43+0.57）
=5.3×1
=5.3

5.7x4.6十5.3x4.6一4.6的简便运算

5.7x4.6十5.3x4.6一4.6
=(5.7+5.3-1)x4.6
=10x4.6
=46

7.13x47+71.3x0.53简便运算答案怎样简便运算

解：采用提取公因式的简便方法：
原式=7.13x47+7.13x53
=7.13x（47+53）
=7.13x100
=713

5.3x14.9+5.3x5.1的简便运算

5.3x(14.9+5.1)
=5.3x20
=106

12.5x5.7x8-5.7÷0.1的简便运算

12.5x5.7x8-5.7÷0.1
=12.5x8x5.7-5.7x10
=100x5.7-5.7x10
=570-57
=513

8.9x5.7 89x0.43怎么简便运算

8.9x5.7+89x0.43简便运算
=8.9×5.7+8.9×4.3
=8.9×（5.7+4.3）
=8.9×10
=89

简便运算9.7x0.43 2.53x9.7-9.7

9.7x0.43+2.57x9.7-9.7
=9.7x（0.43+2.57-1）
=9.7x2
=19.4

12.6一4.7x5.3简便运算

12.6一4.7x5.3简便运算

12.6-4.7×5.3
=12.6-(5-0.3)×(5+0.3)
=12.6-(5²-0.3²)
=12.6-(25-0.09)
=12.6-25+0.09
=-12.31.

3.7x5.3十 7.43的简便运算

3.7x5.3十4.7×3.7
=3.7×（5.3+4.7）
=3.7×10
=37

3.27x5.7一3.27x0.7的简便运算=1

3.27x5.7一3.27x0.7
=3.27×（5.7一0.7）
=3.27×5
=16.35