Reading comprehension worksheet with a poem titled "Passage Two: Smart" about a boy trading a dollar bill for coins, including questions and a small illustration of hands exchanging money.

To find the answer, we need to look at the very beginning of the poem.

1. Read the first stanza: The first four lines say:
"My dad gave me a one dollar bill
because I’m his smartest son,
and I traded it for two shiny quarters
because two is more than one!"

2. Identify the reason: The second line explicitly states the reason using the word "because." It says he gave him the money "because I’m his smartest son."

The boy's father believed the boy was very smart, so he gave him the dollar as a reward or gift.

Final Answer:
Because he thought the boy was his smartest son.