ADDITION

Addition

Addition is an operation that finds the total number when two or more numbers are put together.

In other words, addition is the process to find the sum of two or more numbers.

Examples of Addition

3 and 4 add up to give 7.
50 and 50 add up to give 100.

Video Examples: Addition Rock

Solved Example on Addition

Ques: Add:
31 + 45 + 71 + 2

Choices:

A. 149
B. 139
C. 147
D. 150
Correct Answer: A

Solution:

Step 1: 31 + 45 + 71 + 2 = 149

Real-world Connection for Addition

We use addition in every walk of our life. Addition is used in various fields.
Sam has $5 in one pocket and $7 in another pocket. He wants to buy a book that costs $13. He would immediately add the amounts to check if he has enough money to buy the book.

Quick Summary

Addition combines quantities.
The result of addition is called the sum.

\[ a + b = c \]

⚠️ Common Mistakes

Forgetting to carry over digits in multi-digit addition.
Misaligning numbers when adding vertically.

🌍 Real-World Uses

Calculating the total cost of groceries in a shopping cart.
Determining the combined weight of luggage for air travel.
Adding up points scored in a basketball game to find the winning team's total score.

📋 Standards Alignment

CCSS.MATH.CONTENT.1.OA.C.6
CCSS.MATH.CONTENT.2.OA.B.2

🔗 Related Links

🍎 Teacher Insights

Use manipulatives like counters or blocks to help students visualize the concept of addition. Relate addition to real-world scenarios like combining toys or sharing snacks.

🎓 Prerequisites

Check Your Knowledge

Q1: What is 3 + 4?

6 7 8 9

Q2: What is 50 + 50?

75 80 90 100

Frequently Asked Questions

Q: What is the plus sign?
A: The plus sign (+) is the symbol used to indicate addition.

Q: What does sum mean?
A: Sum is the result you get after adding two or more numbers.