1. What is the sum of $478$ and $145$? The sum is ___.
2. When adding $249 + 133$, you first add the ones: $9 + 3 = 12$. What is the correct next step in the regrouping process?
3. In the addition problem $568 + 273$, a $1$ is carried from the ones column to the tens column. What is the total sum you calculate for the tens column? The sum is ___.
4. What is the correct sum of $185$ and $435$?
5. Calculate the sum of $491$ and $382$. The sum is ___.
6. A prize winner receives six 100 dollars bills, zero 10 dollars bills, and eight 1 dollar bills. What is the total prize money written as a single number? ___ dollars
7. How can the number 729 be represented using bills?
8. A number is made of 3 hundreds, 9 tens, and 4 ones. What is the number? ___
9. In the number 582, what is the value of the digit 5?
10. A wallet contains nine 10 dollars bills, three 100 dollars bills, and five 1 dollar bills. What is the total amount of money written as a single number? ___ dollars