bang 0 nhe vi 0xvoi so nao cung bang 0
7 x 8 x 9 x 9 x 7 x 8 - 0 x 9
= 56 x 9 x 7 x 8 - 0 x 9
= 504 x 7 x 8 - 0 x 9
= 2528 x 8 - 0 x 9
= 20224 - 0 x9
= 20224 - 0
= 20224
1+2+3+4+5+6+7+8+9+0+0+0+0+0+0+9+8+7+6+5+34+2+3+5=.........
1+1+2+2+3+3+4+4+5+5+6+6+7+7+8+8+9+9+0+0+=?
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+0+0+0+3+4+1+2+3+111+44+99
Tính nhẩm
9 x 5 =
63 : 7 =
8 x 8 =
5 x 7 =
8 x 7 =
3 x 8 =
40 : 5 =
5 x 5 =
7 x 5 =
7 x 8 =
6 x 4 =
45 : 9 =
7 x 7 =
35 : 5 =
56 : 8 =
2 x 8 =
81 : 9 =
9 x 9 =
35 : 7 =
56 : 7 =
Tính nhẩm :
9 x 1 =
9 x 5 =
9 x 4 =
9 x 10 =
9 x 2 =
9 x 7 =
9 x 8 =
9 x 0 =
9 x 3 =
9 x 9 =
9 x 6 =
0 x 9 =
Tính nhẩm :
9 x 4 =
9 x 2 =
9 x 5 =
9 x 10 =
9 x 1 =
9 x 7 =
9 x 8 =
0 x 9 =
9 x 3 =
9 x 6 =
9 x 9 =
9 x 0 =
7+7+7+7+7+8+8+9+9=?
9*8*7*6*5*3*1*9*100*10*0*123=???????
1+2+3+4+5+6+7+8+9+0:5:9=?
