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Addition: Where do we use addition in our day-to-day life?

Where do we use addition in our day-to-day life? We use addition in many aspects of our daily lives, such as calculating the total cost of items when shopping, determining the distance traveled by adding the distance covered in each leg of a journey, and keeping track of the number of hours worked or the amount of money earned. Addition is also used in science to calculate quantities like mass, volume, and speed, and in technology for programming and data analysis. It is a fundamental mathematical operation that is essential in many areas of our lives.

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Addition: Solved Examples on Addition

Here are some solved examples on addition:

1. What is the sum of 5 and 7? Answer: The sum of 5 and 7 is 12.

2. Find the total of 9, 3, and 6. Answer: The total of 9, 3, and 6 is 18.

3. Add 4 and 8 together. Answer: 4 + 8 = 12

4. What is the result of adding 10 and 20? Answer: 10 + 20 = 30

5. Calculate the sum of 15, 25, and 35. Answer: 15 + 25 + 35 = 75

References:
– Khan Academy’s “Introduction to arithmetic” course
– Math Is Fun’s “Addition facts” page

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Addition: Properties of Addition

Here’s some information about the properties of addition:

1. Commutative property: The order in which numbers are added does not affect the result. In other words, a + b = b + a.

2. Associative property: The grouping of numbers being added does not affect the result. In other words, (a + b) + c = a + (b + c).

3. Identity element: The number 0 is the identity element for addition because adding it to any number does not change its value. In other words, a + 0 = a.

4. Inverse property: For every number a, there exists an opposite number -a such that a + (-a) = 0.

These properties hold true for all real numbers and are fundamental concepts in mathematics.