Question
What is the missing symbol in the box? 
Express your answer as + or - or x or ÷.

9 + 18 [   ] 6 ÷ 3 = 10
2 m

Click button first when a symbol is required. X

What is the missing symbol in the box? 
Express your answer as + or - or x or ÷.

9 + 18 [   ] 6 ÷ 3 = 10