1. Sarah collected 1,247 stickers in January and 2,856 stickers in February. How many stickers did she collect altogether?

2. A school library has 3,429 fiction books and 2,785 non-fiction books. What is the total number of books in the library?

3. A cinema has 4,250 seats. If 2,847 tickets have been sold for tonight's movie, how many seats are still available?

4. Jake had $8,500 in his savings account. He bought a bicycle for $3,275. How much money does he have left?

5. A factory produces 347 toys each day. How many toys will it produce in 28 days?

6. There are 156 boxes of apples. Each box contains 24 apples. How many apples are there in total?

7. A bakery made 2,448 cupcakes. They want to pack them equally into 24 boxes. How many cupcakes will be in each box?

8. Mrs. Chen has 1,575 marbles to share equally among 25 students. How many marbles will each student receive?

9. A sports shop sold 145 footballs on Monday, 238 footballs on Tuesday, and 167 footballs on Wednesday. On Thursday, they sold twice as many footballs as they did on Monday. How many footballs did they sell in total over the four days?

10. A school ordered 1,200 pencils. They gave 285 pencils to Year 3, 347 pencils to Year 4, and 298 pencils to Year 5. The remaining pencils were shared equally among 5 Year 6 classes. How many pencils did each Year 6 class receive?

11. A farmer has 3 fields. The first field has 1,456 orange trees, the second field has 987 orange trees, and the third field has 1,234 orange trees. Each tree produces an average of 45 oranges. How many oranges will the farmer harvest in total?

12. A concert hall has 2,400 seats arranged in equal rows. There are 48 rows in total. During a concert, 7 rows were completely empty. How many people attended the concert?