简便计算0.92×3.2-0.42×3.8怎么写啊

来源：学生作业帮助网编辑：作业帮时间：2024/04/27 22:10:47

简便计算0.92×3.2-0.42×3.8怎么写啊
简便计算0.92×3.2-0.42×3.8
怎么写啊

简便计算0.92×3.2-0.42×3.8怎么写啊
简便计算
0.92×3.2-0.42×3.8
=(1-0.08)*3.2-(0.5-0.08)*3.8
=3.2-0.08*3.2-1.9+0.08*3.8
=1.3+0.08*0.6
=1.78

0.92×3.2-0.42×3.8
=(0.5+0.42)x3.2-0.42x3.8
=0.5x3.2+0.42x3.2-0.42x3.8
=1.6+0.42x(3.2-3.8)
=1.6+0.42x(-0.6)
=1.6-0.252
=1.348

0.92×3.2-0.42×3.8
=0.92x3.2-0.42x(3.2+0.6)
=0.92x3.2-0.42x3.2-0.42x0.6
=(0.92-0.42)x3.2-0.42x0.6
=5x3.2-0.42x0.6
=1.6-0.42x0.6
=1+0.6-0.42x0.6
=1+(1-0.42)x0.6
=1+0.58x0...

全部展开

0.92×3.2-0.42×3.8
=0.92x3.2-0.42x(3.2+0.6)
=0.92x3.2-0.42x3.2-0.42x0.6
=(0.92-0.42)x3.2-0.42x0.6
=5x3.2-0.42x0.6
=1.6-0.42x0.6
=1+0.6-0.42x0.6
=1+(1-0.42)x0.6
=1+0.58x0.6
=1+0.5x0.6+0.08x0.6
=1+0.3+0.048
=1.348

收起

简便计算0.92×3.2-0.42×3.8怎么写啊 101*0.42简便计算 0.375*0.75*3.2 简便计算!要简便! 0.42*102简便计算6666666666666666666 0.42×201怎么简便计算简便计算0.8+(3.2-2.99) 7.2除以3.2简便计算 3.2*0.24/1.6简便计算 25*3.2如何简便计算 3.2/(63.2/0.8)简便计算 3.2*99简便方法计算 1.25×3.2的简便计算求:3.2/1.25简便计算. 0.98乘3.2简便计算 0.25×3.2×12.5简便计算 3.2×4.5×1.25简便计算 1.25×0.25×3.2简便计算 3.2×0.25×0.125(简便计算)