1. A farmer plants 10 seeds in each of 64 rows. How many seeds did the farmer plant in total? ___
2. To calculate $87 \times 10$, which of the following describes the correct shortcut and result?
3. Solve the following equation for the variable $y$: $3(y + 2) - 5 = 16$. The value of $y$ is ___.
4. A single notebook costs 2.50 dollars. What is the total cost of 4 notebooks, in dollars? ___
5. What is the correct first step to simplify the left side of the equation $6(x - 2) + 5 = 29$?
6. A school purchased 48 new laptops, each costing 495.99 dollars. To estimate the total cost, round the numbers to the nearest compatible numbers and multiply. The estimated total cost is about ___ dollars.
7. A piece of wood is 1.5 meters long. If a carpenter lays 6 of these pieces end-to-end, what is the total length?
8. Simplify the following algebraic expression: $\frac{20c^9d^4}{5c^3d}$. The simplified expression is ___.
9. A factory produces 89 appliances per hour. To estimate how many appliances are produced in an 8.25-hour shift, which calculation uses the most appropriate compatible numbers for an accurate estimate?
10. A landscaper uses 4.5 gallons of fertilizer for each lawn. If she treats 5 lawns in one day, what is the total amount of fertilizer used? The total amount is ___ gallons.