Difference of 2 numbers is correct when the amount of the subtrahend number and the distinction is same to the minuend.

You are watching: Explain why you can check subtraction by adding


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How have the right to you use addition to examine the price of subtraction? How can you use subtraction to examine the price of addition?

Addition (+) and subtraction (-) space opposite operations in math, therefore you have the right to use one to check the answer of the other one. 

For example 1. 2 + 3 = 5

5 - 3 = 2

The first way says, if we start with 2 and add 3, we gain 5.The second way says, if we begin with 5 and also take away 3, we acquire 2. We are just playing with the same numbers forward and backward.

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Thus, 6476 - 2365 = 4111 is true as 2365 + 4111 = 6476. Similarly, the amount of two numbers is true if the difference between the sum and the first number is equal to the second number, i.e., 2365 + 4111 = 6476 is true together 6476 - 4111 = 2365 or 6476 - 2365 is equal to 4111.

Related Concept

● Addition

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● WordProblems Involving enhancement and Subtraction

● EstimatingSums and also Differences

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● Multiplicationof a Number by a 3-Digit Number

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● WordProblems ~ above Division

4th Grade mathematics Activities

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