ZestMath
Grade 1–2 · Ages 6–8

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.

T O
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.

¹
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!

20
Example: 4 + 7
account_balance

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

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