* Learning Goal
Use fingers, pictures, or the number line if you need them. Show the operation that matches each problem.
1 Number Line Jumps
Start at the first number. Think about hopping right to add and left to subtract.
2 Choose the Operation
Read each story. Decide if you should add or subtract.
1. Mia has 4 shells. She finds 2 more. Number sentence:
2. There are 9 crayons. 3 are lost. Number sentence:
3. Jay reads 3 pages before dinner and 4 after dinner. Number sentence:
3 Missing Number
Think about the opposite operation to find the missing number.