1. A farm grew 634 pumpkins and 287 watermelons. How many more pumpkins than watermelons did the farm grow? The difference is ___.
2. A candy store sold 815 lollipops on Saturday and 678 lollipops on Sunday. To find out how many more lollipops were sold on Saturday, which operation should be used?
3. The public library has 502 mystery books and 365 adventure books. How many fewer adventure books than mystery books does the library have? The difference is ___.
4. A city has two elementary schools. Oakwood Elementary has 941 students and Maple Elementary has 753 students. Which equation correctly finds the difference, $d$, in the number of students?
5. A video game has a high score of 8,450 points. Your score is 6,980 points. How many more points do you need to tie the high score? You need ___ points.
6. On April 10, 2023, David needs to know his sister's age. His sister was born on November 5, 2011. What is her correct age in years? ___
7. If you calculate an age by subtracting the birth year from the current year, when must you subtract 1 from that result to find the correct age?
8. As of October 20, 2024, how old is someone who was born on March 15, 2015? The person is ___ years old.
9. A form is being filled out on February 8, 2026. It asks for the age of a child, Sam, who was born on July 22, 2014. What is Sam's correct age?
10. Using the formula $\text{Later} - \text{earlier} = \text{difference}$, find the years that passed between the founding of the United States in 1776 and the start of the Civil War in 1861. The difference is ___ years.