Danny collects bottle caps and wrappers. He found 46 wrappers and 50 bottle caps at the park. Now he has 21 bottle caps and 52 wrappers in his collection. How many more bottle caps than wrappers did danny find at the park?
Danny found 46 wrappers and 50 bottle caps at the park. 

Then, he had 21 bottle caps and 52 wrappers in his collection. 

We want to know how many more bottle caps than wrappers Danny found at the park. 

We can find this out by subtracting the number of wrappers in his collection (52) from the number of wrappers he found at the park (46). Then, we can subtract the number of bottle caps in his collection (21) from the number of bottle caps he found at the park (50). 

This gives us the equation: 

(46 - 52) + (50 - 21) = ?

We can simplify this equation to: 

(-6) + (29) = ?

The answer is 23.