Question

4.4-1.6-1又2/5+3×7/10-2×7/1？

Answer 1

4.4-1.6-1又2/源册液5+3×7/姿脊10-2×7/1
=4.4-1.6-1-2/雹物5+3×7/10-2×7/1
=1.4+2.1-14
=3.5-14
=-10.5

Answer 2

4.4一1.6一1又2／5十3x7／10一2x7／1＝2.8一1.4十2.1一14＝3.5一14＝一10.5。

Answer 3

4.4一1.6一1又2/5+3x7/10一销纯2x7/1=4.4一亏吵咐1.6一1.4+2.1一14=(4.4一1.4)+(2.1一1.6)一14=3+0.5一14=一10.5。
运用加法碰裂分配律

Answer 4

计游棚算：
4.4-1.6-1又2/5+3×7/10-2×7/1
=4.4-1.6-1-2/神汪则陵凯5+3×7/10-2×7
=2.8-1-0.4+3×0.7-2×7
=1.4+2.1-14
=3.5-14
=-10.5

Answer 5

4.4一1.6一禅握漏贺烂1又2/5+3x7/10一2x7/1=4.4一1.6一1.4+2.1一14=(4.4一1.4)+(2.1一1.6)一14=3+0.5一14=一皮誉10.5。