Adding hundreds
Rodney has 329 Pokemon cards and his friend Chris has 42. How many Pokemon cards do they have in all?
371 Pokemon cards
There were 458 people logged on to play a new video game. If 345 people plan to log on tomorrow, how many people will plan in all?
803
The front yard had 456 snowflakes in it. The backyard had 321 snowflakes in it. How many snowflakes were in both yards?
777 snowflakes