Use your addition and subtraction strategies to solve the story problem. 1. Tap the add button. 2. Tap the label tool and label the Strip Diagram. Then use the label tool again to complete the Expanded Form box. 3. Tap the drawing tool to complete your Pictorial Model and Number Line. 4. Tap the record button and record your thinking. Remember to explain your thinking. You can use transition words to help you. 5. Tap the check to add to your journal.