# Positive And Negative Integers, Rational Numbers

## Overview

Welcome to the course material on Positive and Negative Integers, Rational Numbers. This topic is essential in our study of General Mathematics as it forms the foundation for understanding numbers and their relationships. Our objectives for this topic include identifying positive and negative integers on the number line, comparing and ordering rational numbers, performing basic operations on rational numbers, converting numbers from one base to another, understanding the concept of modulo arithmetic, applying rational numbers to daily life situations, performing basic operations on fractions and decimals, and applying approximations and significant figures in calculations.

Let's start by understanding the concept of integers. Integers include positive whole numbers, negative whole numbers, and zero. They are represented on the number line, where positive integers are located to the right of zero, and negative integers are located to the left. We use integers in various real-life situations such as temperature readings, financial transactions, and sports standings.

When working with rational numbers, we encounter fractions and decimals. Rational numbers can be expressed as a ratio of two integers and can include terminating decimals, repeating decimals, and whole numbers. It is important to be able to compare and order rational numbers to determine their relative values.

Performing basic operations such as addition, subtraction, multiplication, and division on rational numbers is crucial for solving mathematical problems. These operations follow specific rules and properties that ensure accurate results. Converting numbers from one base to another involves changing the representation of a number from a given base system to another base system, such as converting from binary to decimal.

Modulo arithmetic is a mathematical operation that involves finding the remainder when one number is divided by another. This concept is used in various encryption algorithms and computer programming to perform calculations efficiently. Applying rational numbers to daily life situations helps us solve practical problems involving measurements, quantities, and comparisons.

Understanding fractions and decimals is essential for performing calculations in various contexts, such as measurements, percentages, and financial calculations. Knowing how to approximate numbers and use significant figures ensures that our calculations are accurate and precise.

Lastly, the laws of indices, numbers in standard form, logarithms, and patterns of sequences are additional concepts that build upon our understanding of numbers and their relationships. These concepts provide us with tools to solve complex mathematical problems and analyze patterns in numerical data.

## Objectives

1. Identify positive and negative integers on the number line
2. Perform basic operations on fractions and decimals
3. Apply approximations and significant figures in calculations
4. Perform basic operations on rational numbers
5. Apply rational numbers and integers to daily life situations
6. Convert numbers from one base to another
7. Compare and order rational numbers
8. Understand the concept of modulo arithmetic

## Lesson Note

Definition: In mathematics, integers are whole numbers that can be positive, negative, or zero. Positive integers are numbers greater than zero, while negative integers are numbers less than zero.

## Lesson Evaluation

Congratulations on completing the lesson on Positive And Negative Integers, Rational Numbers. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.

You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.

Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.

1. Identify the negative integer on the number line. A. -4 B. 3 C. 0 D. 1 Answer: A. -4
2. Which of the following is a rational number? A. √3 B. -5 C. 2/3 D. π Answer: C. 2/3
3. Perform the operation -7 + (-3). A. -10 B. 4 C. 10 D. -4 Answer: D. -4
4. Convert the decimal number 0.625 to a fraction. A. 5/8 B. 2/3 C. 3/4 D. 1/2 Answer: A. 5/8
5. Which of the following is a basic operation on fractions? A. Multiplication B. Subtraction C. Exponentiation D. Square root Answer: A. Multiplication
6. What is the result of 4 modulo 3? A. 2 B. 0 C. 1 D. 3 Answer: C. 1
7. In a geometric progression (G.P.), if a=2, r=3, and n=4, what is the 4th term? A. 41 B. 32 C. 24 D. 18 Answer: A. 41
8. Which of the following numbers is in standard form? A. 0.00345 B. 67,890 C. 1/2 D. 5.6 x 10^4 Answer: D. 5.6 x 10^4
9. Perform the operation 3^4 / 3^2. A. 6 B. 27 C. 9 D. 12 Answer: C. 9

## Past Questions

Wondering what past questions for this topic looks like? Here are a number of questions about Positive And Negative Integers, Rational Numbers from previous years

Question 1

2/31(3/3)(1)  = 333

Question 1

Give the number of significant figures of the population of a town which has approximately 5,020,700 people

Question 1

Simplify the expression:  $$Log_{4}16$$ +  $$Log_{3}27$$ + $$Log_{8}4096$$

Practice a number of Positive And Negative Integers, Rational Numbers past questions