Problem 125 Perform each indicated operation... [FREE SOLUTION]

Chapter 2: Problem 125

Perform each indicated operation. See Section 1.7. $$ 12 \div 4-2+7 $$

Short Answer

Expert verified

The result of the expression is 8.

Step by step solution

Perform Division

First, we need to perform the division. The expression starts with $12 \div 4$. Divide 12 by 4 to get 3. The expression now simplifies to $3 - 2 + 7$.

Perform Subtraction

Next, we carry out the subtraction. From the new expression $3 - 2 + 7$, subtract 2 from 3 to get 1. The expression is now $1 + 7$.

Perform Addition

Finally, perform the addition. Add 7 to 1 to obtain 8. Thus, the final result of the expression is 8.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Division

Division is one of the four basic operations in arithmetic. It's the process of splitting a number into equal parts or groups. In our exercise, the expression begins with $12 \div 4$. When we perform this division, we say we're splitting 12 into 4 equal groups. Each group, in this case, will have 3, because 12 divided by 4 equals 3.

Think of division as the opposite of multiplication.
With the expression $12 \div 4$, you're figuring out how many times 4 fits into 12.
The key to mastering division is practice and understanding its relationship with multiplication.

Knowing how to perform division correctly is crucial before moving on to the next steps in solving any mathematical expression.

Subtraction

Subtraction is the arithmetic operation of deducting one number from another. After performing division, our expression simplifies to $3 - 2 + 7$. Here, subtraction is the next operation according to the order of operations.

We take 2 away from 3, which results in 1.
Subtraction helps to determine the difference between numbers.
It is important in various calculations, helping us to find out how much is left when something is removed.

Think of subtraction as the process of taking away, which gives you the remainder or what is left.

Addition

Addition is one of the simplest arithmetic operations. It's used to calculate the total or sum of numbers. The final operation in our sequence is to add 7 to the result from the subtraction, which is 1.

In our example, adding 7 to 1 gives us 8.
Addition is simply combining numbers to get a total.
It is the foundation for other operations like multiplication and is essential in everyday math.

By understanding and practicing addition, you build a strong base for tackling more complex mathematical tasks.

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91影视

Perform each indicated operation. See Section 1.7. $$ 12 \div 4-2+7 $$

Short Answer

Step by step solution

Perform Division

Perform Subtraction

Perform Addition

Key Concepts

Division

Subtraction

Addition

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