Select button to bring this to your device. 1. ⬅️ Watch the video to review the 'Make a 10' strategy. 2. Use to show your thinking and solve for the missing subtrahend. 3. Write the missing subtrahend in the pink box. 4. You can use the tool to check and see if your answer is accurate. 5. Choose to save and return later to complete or to add this to your journal.