This math topic focuses on practicing finding missing values in addition problems that summarize to tens. It hones the ability to add 1 and 2-digit integers by having students determine the unknown addend that achieves a specific sum. The exercises range from basic to slightly more challenging puzzles, ensuring the learner understands integer addition up to two digits. Each problem offers multiple-choice answers, assisting in quicker validation of the learner's solutions.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.