/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 43 Fill in the blank with the appro... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 3: Problem 43

Fill in the blank with the appropriate number. $$18-18= ______ $$

Short Answer

Expert verified
0

Step by step solution

01

Understand the problem

The problem is asking to find the result of the subtraction operation: 18 minus 18.
02

Perform the subtraction

Subtract 18 from 18. Subtracting a number from itself always results in zero.
03

Write the result

The result of the subtraction 18 - 18 is 0. Therefore, fill in the blank with 0.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

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

Subtraction
Subtraction is one of the four basic arithmetic operations. It involves taking one number away from another. When we subtract, we are essentially calculating the difference between two numbers. In mathematical notation, subtraction is usually represented by the minus sign (鈭�).
For example, in the problem 18 - 18, we are asked to subtract 18 from 18. This is a straightforward subtraction where both numbers are the same, and it highlights an important concept in subtraction: if you subtract a number from itself, the result is always zero. To understand this better:
  • When 5 - 3 = 2, we mean we take 3 from 5, and the difference is 2.
  • Similarly, in 18 - 18, taking 18 from 18 leaves nothing, which is 0.
Zero
Zero is a unique and special number in arithmetic. It is known as the additive identity because any number added to zero is the number itself. In the context of subtraction, zero plays a crucial role:
When subtracting two identical numbers, like in 18 - 18, the result is always zero. This is because there is no difference between the two numbers.
Zero is also important because it serves as a placeholder in our number system, helping us to perform more complex arithmetic operations.
  • In the exercise, 18 - 18 = 0, zero shows that nothing is left after subtraction.
  • Zero can stand for an absence of quantity or value, making it fundamental in subtraction and other arithmetic operations.
Arithmetic Operations
Arithmetic operations are basic mathematical procedures that include addition, subtraction, multiplication, and division. These operations form the foundation of mathematics and are used in everyday calculations.
Let's break down their importance:
  • **Addition**: Combining two or more numbers to get a total.
  • **Subtraction**: Taking one number away from another, as we've seen in 18 - 18, which results in 0.
  • **Multiplication**: Repeated addition of the same number.
  • **Division**: Splitting a number into equal parts.
Each of these operations has its own rules and properties. Understanding them is essential for solving mathematical problems. Subtraction, like in our exercise, helps develop a deeper understanding of how numbers interact and the concept of differences between quantities.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Solve the equation. $$p-6=-18$$

Apply the associative property of addition or multiplication to rewrite each expression. Then simplify the expression. $$7+(5+p)$$

Solve the equation. $$\frac{m}{-3}+40=60$$

Solve the equation. $$2 x+22=6 x-2$$

Fill in the blank with the appropriate number. $$2-2= ______ $$
See all solutions

Recommended explanations on Math Textbooks

Mechanics Maths

Read Explanation

Geometry

Read Explanation

Calculus

Read Explanation

Applied Mathematics

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Probability and Statistics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.