(3+5/9-2/3)*(1/6+1/6+1/12)-(1/6-1/9+1/12)*3+(1/6+1/9+1/12)*(2/3-5/9)怎没做?

来源:百度知道 编辑:UC知道 时间:2024/06/19 13:27:20

(3+5/9-2/3)*(1/6+1/9+1/12)-(1/6+1/9+1/12)*3+(1/6+1/9+1/12)*(2/3-5/9)
=(1/6+1/9+1/12)*(3+5/9-2/3-3+2/3-5/9)
=(1/6+1/9+1/12)*0
=0

0+1= 0+2= 0+3= 0+4= 0+5= 0+6= 0+7= 0+8= 0+9=
0+0= 1+2= 1+1= 1+3= 1+4= 1+5= 1+6= 1+7= 1+8=
1+9= 2+1= 2+2= 2+3= 2+4= 2+5= 2+6= 2+7= 2+8=
3+1= 3+2= 3+3= 3+4= 3+5= 3+6= 3+7= 4+1= 4+2=
4+3= 4+4= 4+5= 4+6= 5+1= 5+2= 5+3= 5+4= 5+5=
6+1= 6+2= 6+3= 6+4= 7+1= 7+2= 7+3= 8+1= 8+2=
9+1= 9-1= 9-2= 9-3= 9-4= 9-5= 9-6= 9-7= 9-8=
9-9= 8-1= 8-2= 8-3= 8-4= 8-5= 8-6= 8-7=
8-8= 7-1= 7-2= 7-3= 7-4= 7-5= 7-6= 7-7=
6-1= 6-2= 6-3= 6-4= 6-5= 6-6= 5-1= 5-2=
5-3= 5-4= 5-5= 4-1= 4-2= 4-3= 4-4= 3-1=
3-2= 3-3= 2-1= 2-2= 1-1= 9-0= 8-0= 7-0=
6-0= 5-0= 4-0= 3-0= 2-0= 10-6= 10-8= 10-1= 10-9=

二、10以上20以内不进位加减法

10+1= 10+2= 10+3= 10+4= 10+5= 10+6= 10+7= 10+