Grade 1: Adding Two-Digit Numbers Without Regrouping

➕ Adding Two-Digit Numbers Without Regrouping for Grade 1 ➕

Adding two-digit numbers without regrouping is a fundamental skill in first-grade math. It involves adding the ones place and the tens place separately, without needing to 'carry over' any digits.

Steps to Add Two-Digit Numbers Without Regrouping

1. Write the Numbers Vertically: Align the numbers so that the ones digits are above each other and the tens digits are above each other.
2. Add the Ones Digits: Add the digits in the ones place. Write the sum directly below the ones column.
3. Add the Tens Digits: Add the digits in the tens place. Write the sum directly below the tens column.
4. Combine the Sums: The number formed below the line is the sum of the two-digit numbers.

Example 1: 23 + 14

  23
+ 14
----

• Step 1: Add the ones digits: 3 + 4 = 7
• Step 2: Add the tens digits: 2 + 1 = 3

  23
+ 14
----
  37

Therefore, 23 + 14 = 37.

Example 2: 41 + 35

  41
+ 35
----

• Step 1: Add the ones digits: 1 + 5 = 6
• Step 2: Add the tens digits: 4 + 3 = 7

  41
+ 35
----
  76

Therefore, 41 + 35 = 76.

Example 3: 62 + 27

  62
+ 27
----

• Step 1: Add the ones digits: 2 + 7 = 9
• Step 2: Add the tens digits: 6 + 2 = 8

  62
+ 27
----
  89

Therefore, 62 + 27 = 89.

📝 Practice Problems 📝

• 12 + 34 = ?
• 25 + 43 = ?
• 51 + 28 = ?

Adding two-digit numbers without regrouping is a foundational skill that helps build a strong understanding of addition. Keep practicing, and you'll become a math whiz in no time! 🎉