Click the button. Listen to the directions for the first problem. Then tap Use the tool to solve the problem. Listen to the directions for the next problem. Tap again and solve using the tool. Repeat for the other problems. When you have solved all of the problems, tap and use the to point to each problem and tell how you knew it was addition or subtraction. When done, click the to submit.
Which operation would you need to solve each problem. Describe how you knew which operation to use to solve.