This subject covers foundational math concepts for 2nd graders, including addition, subtraction, and basic problem-solving skills.
After you finish a problem, go back and check your answer. You can solve it a different way, use the opposite operation, or see if your answer makes sense. Checking helps you catch mistakes and become a super math star!
After adding 42 + 19, subtract 19 from your answer to see if you get 42.
Solve a subtraction problem by drawing a quick picture to check.