First grade students are expected to add and subtract within 20, demonstrating fluency for addition and subtraction within 10. This activity allows the student practice in becoming fluent with these math facts. Included is a student sheet and key.Click here for more fun and engaging Valentine's Day games and activities. Click here for more Mystery Picture ~ Color by Code activities. You'll find activities for both math and phonics. Check them out!If you like this activity, I encourage you to f