CCSS.MATH.2.NBT.B.5 / TEKS 2.4.C.2✓ Texas Education Agency (TEA) AlignedAcademic Year 2026–27
Multi-Digit Addition & Regrouping
Execute standard addition algorithms with place-value regrouping across tens and hundreds.
Why It Matters:Essential for budgeting, inventory management, and engineering estimates.
Curated Video Instruction
● Verified Active EmbedSTEP-BY-STEP PROOF
Worked Example
Calculate 468 + 285 with explicit place-value regrouping:
1
Add ones column
8 + 5 = 13 (3 ones, carry 1 ten)
Write 3 in ones place, regroup 1 to tens column.
2
Add tens column
1 + 6 + 8 = 15 (5 tens, carry 1 hundred)
Write 5 in tens place, regroup 1 to hundreds.
3
Add hundreds column
1 + 4 + 2 = 7 hundreds
Total is 753.
✓Verification Check
Verify using inverse subtraction: 753 - 285.
753 - 285 = 468
•
468 = 468
⚠️ Common Pitfalls & Misconceptions
Forgetting to add regrouped carries
✗ Adding 6 + 8 = 14 without adding the carried 1✓ Write the carried value above the next column and add it first
Regrouped units must always be added to the adjacent column.
INTERACTIVE DRILLS
Guided Practice
Practice Question1 of 1
Step-by-step Feedback
What is 357 + 486?
MASTERY BENCHMARK
Official Assessment Quiz
Formal Assessment
Multi-Digit Addition & Regrouping
Passing Criteria:70% or higher
Question 1 of 1
Which operation checks the correctness of an addition sum?
Education to Career Navigation
Where This Lesson Leads
Operations Managers and Retail Specialists rely on rapid, accurate addition.