Problem 13 On the number line, which number... [FREE SOLUTION]

Chapter 1: Problem 13

On the number line, which number is: 4 units to the left of 9

Short Answer

Expert verified

The number that is 4 units to the left of 9 is 5.

Step by step solution

Understand the task

It is said in the task to move 4 units to the left of the number 9 on a number line. This implies subtracting 4 from the number 9.

Execute the operation

To execute the operation, it is necessary to calculate 9 - 4, which equals 5.

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Key Concepts

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

Integer Subtraction

Integer subtraction is the process of finding the difference between two whole numbers on the number line. It involves moving left for subtraction. For example, if you start at the number 9 on the number line and move 4 units left, you are essentially subtracting 4 from 9. This means:

Starting at 9
Moving left 4 places

Thus, the result is the number you land on, which is 5. This makes subtraction an important operation because it helps compare values and determine differences. Understanding integer subtraction not only solves basic arithmetic problems but also lays the groundwork for more advanced math concepts like algebra.

Basic Arithmetic

Basic arithmetic forms the foundation for all areas of mathematics. It includes operations like addition, subtraction, multiplication, and division. Subtraction is an elementary operation that takes one number away from another.

When you perform subtraction:

You start with one number, called the minuend, which in our exercise is 9.
You take away a second number, called the subtrahend, which is 4.

Using subtraction, you can solve problems like finding missing quantities or determining how much something exceeds another. This is why mastering basic arithmetic is crucial for fluency in mathematical reasoning and problem-solving.

Number Operations

Number operations encompass a wide range of calculations you can do with numbers, including addition, subtraction, multiplication, and division. In the context of a number line, these operations help understand how numbers behave and relate to one another.

The number line is a visual tool that makes these operations clearer. When asked to move 4 units to the left of 9 on the number line, subtraction becomes a visual process:

You see subtraction as physically moving to a new position.
Each unit move left represents taking away one number.

Understanding this concept helps reinforce the physical idea of subtraction and enhances number sense, aiding in more complex math skills like fractions and negative numbers.

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91影视

On the number line, which number is: 4 units to the left of 9

Short Answer

Step by step solution

Understand the task

Execute the operation

Key Concepts

Integer Subtraction

Basic Arithmetic

Number Operations

One App. One Place for Learning.

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