Real World: Integers can be used to represent real world data When numbers are used to represent physical quantities (altitudes, temperatures, and amounts of money are examples), it may be necessary to distinguish between positive and negative quantities The symbols + and -- are used for this purpose
Mathematics learning includes integers, whose starting point starts from context is Indonesia's realistic Mathematics Education Integers are an essential requirement for human activities in daily life Using these numbers, humans can mention many, few, less, more, the same, add, less, times, for, and give value to daily transaction activities
Linear Programming is a strong tool for many real-life optimization problems We can solve large problems (thousands of constraints and millions of variables) We can solve problems fast (even big problems with hundreds of constraints and thousands of variables solve in seconds or fractions hereof) We can model a lot of problem type and using
notation used at post-primary level For example, +5 + -7, is read as positive 5 and negative 7 It may be an idea to start students with this notation initially when dealing with integers For example -6 + 7 (read as negative 6 plus negative 7) gives -13 (read as negative 13) Learning Outcomes
These numbers are Integers: 0; 3; –100; 432; 987,654,321; 10 2; – 6 3; 99 9 These numbers are not Integers: 7 2, 10 4, – 5 8, – 3 7 Write Integers for Real-Life Situations a gain of 5 yards on the first down 6 feet below sea level a temperature of 10 degrees below zero a $35 withdrawal You Try Underline key words a
Integers can be used to describe the value of many things in the real world The height of a mountain in feet may be a very great integer while the temperature in degrees Celsius at the top of that mountain may be a negative integer LESSON 1 1 Identifying Integers and Their Opposites 6 2 B LESSON 1 2 Comparing and Ordering Integers 6 2 C
Negative integers are integers ______ than zero • Positive Write Integers for Real-Life Situations a gain of Use the > ,
understand positive and negative integers and use them to describe real-life situations ○ graph integers on a number line Ź40 Ź20 0