37×199的简便运算 一次7.3×37.3-27.3×17.3的简便运算怎样算

一次7.3×37.3-27.3×17.3的简便运算怎样算  

一次7.3×37.3-27.3×17.3的简便运算怎样算

7.3×37.3-27.3×17.3
=7.3×(27.3+10)-27.3×(7.3+10)
=7.3×27.3+7.3×10-27.3×7.3-27.3×10
=(7.3-27.3)×10
=(-20)×10
=-200

17.3x37.3一27.3x173的简便运算

17.3x37.3一27.3x173
貌似题目出错了，应该是：
17.3x37.3一27.3x17.3
＝17.3x（37.3一27.3）
＝17.3x10
＝173

17.3乘37.3-273×1.73的简便运算

17.3X37.3-273×1.73
=1.73X373-273X1.73
=1.73X(373-273)
=1.73X100
=173
望采纳

17.3+15.5-7.3+4.4的简便运算

17.3+15.5-7.3+4.4
解：
=17.3-7.3+15.5+4.4
=10+15.5+4.4
=25.5+4.4
=29.9
祝学习进步。

27.3*37.3-17.3*37.3怎样简便

27.3*37.3-17.3*37.3=（27.3-17.3）*37.3=10*37.3=373

7.3×5.23+7.3×3.77+7.3怎样简便运算?

7.3×5.23+7.3×3.77+7.3
=7.3×(5.23+3.77+1)
=7.3×10
=73

50.9—7.3×6.9怎样简便运算

(50+0.9)-(7+0.3)(7-0.1)=50-49+0.03+0.9-1.4=0.5+0.03=0.53

2.7+3.5+6.85+17.3怎样简便运算

2.7+3.5+6.85+17.3
=（2.7+17.3）+（3.5+6.85）
=20+10.35
=30.35

3.6÷[(17.3+30.7)x0.25]用简便运算怎样算

3.6÷[(17.3+30.7)x0.25]

=3.6÷[48 x 0.25]

= 3.6÷[ 6 x （8 x0.25）]

= 3.6÷[ 6 x 2]

=3.6÷ 12

=0.3

100.1×7.3 简便运算