Find the Missing Addend within 20 – Grade 2 Addition Practice

Build fluency in addition missing number problems with this interactive math activity designed for 2nd grade learners. In Level 1, students find the missing second addend (e.g., 7 + ? = 15). Level 2 challenges them to identify the missing first addend (e.g., ? + 6 = 14). Level 3 mixes both types randomly to reinforce flexible thinking. Each level includes instant feedback, visual progress tracking, and multiple-choice answers arranged in an easy-to-use grid—making math practice feel like a game!

Perfect for reinforcing the concept of missing addend within 20, a key skill in early arithmetic and problem-solving.