Master addition skills with fun, self-checking online exercises designed for 2nd graders. Practice mental math, column addition, word problems, and more. Instant feedback and progress tracking.
Adding Within 20: Foundations
Adding within 20 is a foundational skill for second-grade math success.
Addition Race: Sums to 20
Grades: Grade-2 Progress: 0%Missing Addend within 20
Grades: Grade-2 Progress: 0%Missing Addend Challenge Game
Grades: Grade-2 Progress: 0%Add Three Numbers Within 20: Interactive Practice for Grade 2
Grades: Grade-2 Progress: 0%Addition Within 20: Final Quiz
Grades: Grade-2 Progress: 0%Two-Digit Addition Without Regrouping
Master adding two-digit numbers without regrouping. These interactive exercises help students confidently add numbers like 23 + 45 using place value understanding, column alignment, and mental strategies.
Add a 2-Digit and 1-Digit Number
Grades: Grade-2 Progress: 0%Add two 2-digit numbers
Grades: Grade-2 Progress: 0%Find the Missing Addend: Two-Digit Numbers
Grades: Grade-2 Progress: 0%Two-Digit Addition With Regrouping
Now that you’ve mastered addition without regrouping, it's time to level up! In this section, students learn to add two-digit numbers with regrouping (carrying). From straightforward sums like 47 + 38 to multi-addend challenges (24 + 5 + 8 + 9) and vertical column practice, these interactive exercises build confidence, accuracy, and mental math fluency.
Add Two 2-Digit Numbers With Regrouping
Grades: Grade-2 Progress: 0%Two-Digit Addition Drills
Grades: Grade-2 Progress: 0%Addition Rally: Regrouping Challenge
Grades: Grade-2 Progress: 0%Add Multiple Numbers With Regrouping
Grades: Grade-2 Progress: 0%Column Addition With Regrouping
Grades: Grade-2 Progress: 0%Adding Whole Tens and Hundreds
Build strong place value foundations with <strong>addition of whole tens and hundreds</strong>! These interactive exercises help Grade 2 students confidently add multiples of 10 (like 30 + 50) and multiples of 100 (like 400 + 300), all within 1,000. Aligned with <strong>Common Core standard 2.NBT.B.8</strong>, this skill prepares learners for multi-digit addition and mental math fluency.
Add Whole Tens Within 100
Grades: Grade-2 Progress: 0%Add Whole Hundreds Within 1000
Grades: Grade-2 Progress: 0%Addition Word Problems
Solve real-world math with addition word problems designed for Grade 2!