Multi-Digit Addition: Equations & Reasonableness Quest

Lily has 245 stickers, and her friend gives her 378 more. How many stickers does Lily have now? Write an addition equation to show your work.

• 623

• 700

• 600

• 500

A bookstore sold 1,234 books in January and 1,456 books in February. How many books did they sell in total? Write an addition equation and check if your answer is reasonable.

• 2500

• 2690

• 3000

• 1500

Tom has 567 marbles, and he buys 289 more. How many marbles does Tom have altogether? Write an addition equation to solve this problem.

• 756

• 789

• 856

• 900

In a school, there are 1,200 students in the morning session and 1,150 students in the afternoon session. How many students are there in total? Write an addition equation and check for reasonableness.

• 2350

• 2500

• 2400

• 2300

Sarah collected 345 seashells, and her brother collected 678 seashells. How many seashells do they have together? Write an addition equation to find the total.

• 1020

• 800

• 1000

• 1023

A farmer has 1,050 apples and picks 1,230 more from his trees. How many apples does he have now? Write an addition equation and check if your answer makes sense.

• 2,280

• 1,500

• 1,800

• 2,000

There are 432 cars in a parking lot and 289 more cars arrive. How many cars are in the parking lot now? Write an addition equation to show your work.

• 800

• 500

• 600

• 721

A library has 2,345 books, and it receives a donation of 1,678 books. How many books does the library have in total? Write an addition equation and check for reasonableness.

• 4,023

• 2,000

• 5,000

• 3,500

Emma has 1,234 crayons, and she buys 567 more. How many crayons does she have now? Write an addition equation to solve this problem.

• 1500

• 1801

• 2000

• 800

A toy store sold 1,500 toys in December and 1,250 toys in January. How many toys did they sell in total? Write an addition equation and check if your answer is reasonable.

• 2500

• 1500

• 3000

• 2750