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Class 2 Class 3 Class 4 CBSE UP Board 📘 What's inside: 1 What is Carrying? 2 Adding 2-Digit Numbers With Carry 3 Adding 3-Digit Numbers With Carry 4 Word Problems 5 Exam Questions Concept 1 — What is Carrying? ``` When we add digits in a column and the result is 10 or more , we cannot write a two-digit number in a single column. So we write the units digit below the line and carry the tens digit forward to the next column on the left. This is called carrying (also called regrouping ). 7 + 5 Column sum = 12  (10 or more) carry 1 Tens digit → next column Write 1 above next column 2 Units digit → below line Write 2 in answer row The carry is always 1. Because we are adding single digits (0–9) to single digits, the maximum any column can reach is 9 + 9 = 18, so the tens d...

Class 2 Class 3 CBSE UP Board 📘 What's inside: 1 What is Addition Without Carry? 2 Adding 2-Digit Numbers 3 Adding 3-Digit Numbers 4 Word Problems 5 Exam Questions Concept 1 — What is Addition Without Carry? When we add numbers using the column method, sometimes the digits in a column add up to 10 or more . In that case we have to pass (carry) a digit to the next column — that is called addition with carry and is a separate topic. In addition without carry , every column adds up to 9 or less . This means we simply write the answer for each column directly below the line — no carrying, no extra steps. The one rule to check: Before you start, look at each column. If Ones + Ones ≤ 9, Tens + Tens ≤ 9, and Hundreds + Hundreds ≤ 9, then there is no carry and this method applies. ▶ Ones column sum must be ≤ 9 ...