1. A school library has 275 fiction books and 431 non-fiction books. Estimate the total number of books by rounding each number to the nearest hundred.
2. Estimate the sum of 689 and 110 by rounding each number to the nearest hundred. The estimated sum is ___.
3. Use the distributive property to expand the expression $5(2x + 4)$. The simplified expression is ___.
4. Which expression is equivalent to $4(5y - 3)$ after applying the distributive property?
5. Which statement describes the correct first step to estimate the sum of 192 and 425?
6. A toy car costs 7 dollars and a board game costs 38 dollars. To estimate the total cost, round each price to the nearest ten and add. The estimated total is ___ dollars.
7. To estimate the sum of 23 and 68 by rounding to the nearest ten, what is the correct first step?
8. Maria has 52 stickers, and her friend gives her 29 more. Estimate the total number of stickers Maria has by rounding each number to the nearest ten. She has about ___ stickers.
9. A shirt costs 22 dollars and a hat costs 11 dollars. Which of the following is the best estimate for the total cost when rounding to the nearest ten?
10. A video game costs 88 dollars. You have a coupon for 19 dollars off. Estimate the final price by rounding both numbers to the nearest ten before subtracting. The estimated price is ___ dollars.