Question

(29)下面各题怎样简便怎样算 (写出主要过程)6.35 8.4-29.64 2.2 7.5+3？

Answer 1

6.35+8.4-29.64+2.2+7.5+3=（6.35+8.4+2.2+7.5+3）-29.64=（14.75+12.7）-29.64=27.45-29.64=-2.19

Answer 2

6.35+8.4-29.64+2.2+7.5+3
=6.35+8.4+2.2+7.5+3-29.64
=14.75+2.2+7.5+3-29.64
=16.96+7.5+3-29.64
=16.95+10.5-29.64
=27.45-29.64
=-2.19
希望能帮到你！！！

Answer 3

6.35+8.4-29.64+2.2+7.5+3
＝14.75+2.2+7.5+3-29.64
＝16.95+7.5+3-29.64
＝24.45+3-29.64
＝27.45-29.64
＝－2.19

Answer 4

6.35＋8.4一29.64＋2.2＋7.5＋3
＝14.75一29.64＋（2.2＋7.5＋3）
＝14.75＋12.7一29.64
＝27.45一29.64
＝一2.19

Answer 5

答案为-2.19，算式可化为(6.35+8.4+2.2+7.5+3)-29.64=(6+8+2+7+3)+(0.35+0.4+0.2+0.5)-29.64=26+1.45-29.64=-2.19