Solve addition and subtraction problems
4th Grade Math practice: A school library has 36,845 books. It gets 8,760 new books. Then 1,245 books are moved to another room. How many books stay in the library. Part of addition and subtraction (Add and Subtract).
~10 min
Use addition to combine amounts and subtraction to find how many more or how many left.
Choosing Addition
Blue row
Green row
Use addition when you need to combine two or more amounts into a single total, or when you are finding the sum of several groups.
💡 Look for keywords like 'altogether', 'total', or 'combined' in a problem.

