1. Calculate the total sum of $39 + 48 + 56$. The answer is ___.
2. When calculating the sum $67 + 59 + 88$, what number must be carried over to the tens column after adding the ones column?
3. What is the digit in the ones place of the final answer for the sum $25 + 48 + 39 + 17$? The digit is ___.
4. A bakery sold 38 muffins, 49 croissants, and 27 scones. How many pastries did the bakery sell in total?
5. Calculate the sum of the following numbers: $37 + 45 + 28 + 39$. The sum is ___.
6. Write the number 6,281 in expanded form. The expanded form is 6000 + ___ + 80 + 1.
7. Which of the following correctly shows the number 506 in expanded form?
8. What number is represented by the expanded form $3000 + 40 + 9$?
9. Using the principle of expanded form, which expression correctly breaks down the sum $581 + 317$?
10. A number has 4 thousands, 0 hundreds, 5 tens, and 2 ones. What is this number's value in expanded form? 4000 + ___ + 2