2-Digit Addition
Add two-digit numbers using column addition — with and without carrying (regrouping).
Without Carrying
When the ones digits add to 9 or less — no carrying needed. Just add each column.
3 4
+ 2 3
5 7
Step 1 — Ones column: 4 + 3 = 7. Write 7.
Step 2 — Tens column: 3 + 2 = 5. Write 5.
Answer: 57
With Carrying (Regrouping)
When the ones digits add to 10 or more — carry the 1 into the tens column.
4 7
+ 3 6
8 3
Step 1 — Ones: 7 + 6 = 13. Write 3, carry 1 to tens.
Step 2 — Tens: 4 + 3 + 1 (carried) = 8. Write 8.
Answer: 83
Practice — 2-Digit Addition
Work through medium-difficulty addition problems. Remember to check for carrying!
Curriculum Standards & Learning Objectives
This worksheet topic strictly aligns with global mathematics curricula. Review the detailed learning outcomes and standard identifiers for Two-Digit Addition (No Regrouping).
US Common Core
2.NBT.B.5
Add within 100 using place value
CBSE (India)
Grade 2
Two-digit addition without regrouping
UK National Curriculum
Year 2
Add two 2-digit numbers
IGCSE
Foundation
Place value addition
Singapore Math
Primary 2
Addition without regrouping
Australian Curriculum
ACMNA030
Add two-digit numbers
IB PYP
Year 2
Place value addition
Canadian Curriculum
Grade 2
Two-digit addition
New Zealand
Level 2
Addition strategies
UAE
Grade 2
Two-digit addition
Saudi Arabia
Grade 2
Addition without carrying
ICSE (India)
Class 2
Two-digit addition
State Boards (India)
Class 2
Addition without regrouping
NCERT (India)
Class 2
Two-digit addition without regrouping
All other curricula (21-50)
Grade 2-3 equivalent
Two-digit addition