MATH LESSON: 1st GRADE
Operations & Algebra: "Adding within 20 (vertical)"
Lesson 2 of 5. Students will add two digits, the resulting sum being less than or equal to 20. The worksheets include one problems page, an answer page with a number bank, and a standard answer page. *
ABOUT THE AUTHOR: Elizabeth Sweet has taught grades 3-5 since 2003. Her awards include County Teacher of the Year (2015). When she’s not busy teaching 4th grade in the American public school system, she enjoys baking, reading, knitting and exploring nature.