Girl&Boy

"I want to know if you love me. If you do love me then solve my puzzle quickly."
"Wow you caught me off guard! What did you say?"
"I want you to come up with as many numbers as you can to make a total number by adding your numbers up with mine."
"???"

I know for sure that my girl friend loves me as she is always coming up with arithmetic puzzles for me.
My sweetheart just today invented a really cool puzzle game and wants me to play with it with her.
If I lose this game, who knows, she might not think I am smart enough to be with her.
My girlfriend then proceeded to tell me how the game works. My girlfriend starts by telling me that this game reminds us our childhood stories, happy memories.
Girl and boy, playing arithmetic puzzles and challenging each other ... being playful and loving to each other...
She says this game will bring back the nostalgia of childhood memories.

My girlfriend then tells me "this is more than just a game"
She says that your intelligence can be measured based on the results of this game.
She then informs me that if I earn more than 500 points, I am considered smart.

The rule of this game is very simple but to understand the game you need to have a high IQ.
Each stage has a target number, a goal to reach.
And a cute girl shows her number every time.
Your goal should be to find as many numbers as possible from the board, which will add up with her numbers to reach the target number within a specific amount of time.
Please try this game, you will enjoy very much.