1. A farmer plants 6 rows of corn, with 48 corn stalks in each row. To estimate the total number of stalks, you can use 50 as a compatible number for 48. What is the estimated total? ___
2. Which compatible number is most useful for easily estimating the product of $8 \times 124$?
3. A factory produces 653 toy cars each day. Estimate the total number of toy cars produced in 4 days by changing 653 to the compatible number 650. ___
4. A monarch butterfly can fly about 24 miles per hour. Using compatible numbers, about how many miles can it fly in 7 hours?
5. Estimate the product of $3 \times 8,190$ by changing 8,190 to the nearest compatible hundred, which is 8,200. The estimated product is ___.
6. Which expression provides the best estimate for $9 \times 346$ using a compatible number that is a multiple of 50?
7. A ticket to a theme park costs 59 dollars. If a family of 4 buys tickets, estimate the total cost in dollars by using a compatible number for the price. ___
8. To estimate the product of $4 \times 76$, which compatible number for 76 would make the mental calculation easiest?
9. An auditorium has 8 sections. Each section has 148 seats. Use a compatible number to estimate the total number of seats in the auditorium. ___
10. Use compatible numbers to estimate the product of $6 \times 78$. The estimated product is ___.