Addition in Horizontal Method:
The horizontal method for addition involves arranging numbers side by side with a plus sign (+
) in between. Instead of aligning the digits in columns, the addition is performed mentally or by breaking it down into place values step-by-step.
Example 1:
Add 34 and 28.
Solution:
- Write the numbers in a horizontal format: 34 + 28
- Break it into place values:
- Add the ones in place: 4+8=12 (write 2, carry over 1 to the tens place)
- Add the tens place: 3+2=5,5+1=6
- Final solution: 34+28=62
Example 2:
Add 125 and 347.
Solution:
- Write the numbers in a horizontal format: 125+347
- Break it into place values:
- Add the once places: 5+7=12 (write 2, carry over 1 to the tens place)
- Add the tens place: 2+4=6,6+1=7
- Add the hundreds place: 1+3=4
- Final Solution: 125+347=472
Example 3:
Add 413, 25, and 62.
Solution:
- Write the numbers in a horizontal format: 413+25+62
- Break it into place values:
- Add the once places: 3+5+2=10 (write 0; carry over 1 to the tens place)
- Add the tens place: 1+2+6=9,9+1=11=10 (write 0; carry over 1 to the hundred places)
- Add the hundreds place: 4+0+0=4,4+1=5
- Final Solution: 413+25+62=500
Why it matters:
Adding whole numbers is a fundamental math skill that helps solve everyday problems, from calculating expenses to measuring quantities. Mastering addition improves problem-solving, logical thinking, and mental math abilities.
By practicing addition with whole numbers, you'll solve real-world problems quickly!
Let's practice and evaluate our work together by adding whole numbers