3 + 4 + 5 + 6 + 7 + 8 + 9 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 0 x 3 x 3 x 3 x 3 x 3 x3 x3 x3 x3 x33 x3 x3 x3 =
3+3+3+3+3333+3+3+3
81: 3 : 3 = ?
36: 3: 3 =?
54:3:3=?
72:3:3=?
3*3+3*3-3*3=
3×1=
3×2=
3×3=
3×4=
3×5=
3×6=
3×7=
3×8=
3×9=
3×10=
3+3+3+3+3+3+111=?
3 + 3 x 3 +3 x 3 +3
a,6 x 6 x 6 x 6 x 6 x 6 x 6
= ...... x ......
= ......
b,3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3
= ...... x ......
= ......
nhanh cho tick !