Table of Contents
- 1 How can you apply the concept of positive and negative numbers in real life situations?
- 2 What is the rule for adding positives and negatives?
- 3 Where are positive numbers used?
- 4 What are the rules for adding positive and negative integers?
- 5 How to subtract a negative integer using number line movements?
How can you apply the concept of positive and negative numbers in real life situations?
Altitude – above sea level is positive, below sea level is negative. Temperature – temperatures below zero are negative. Money (Loans) – savings are positive, loans are negative. Science – protons have a positive charge and electrons have a negative charge.
What is the rule for adding positives and negatives?
When adding positive numbers, count to the right. When subtracting positive numbers, count to the left. When subtracting negative numbers, count to the right.
How do we use positive numbers in your everyday life?
Negative and positive numbers are used in real life to describe the distance from a reference point. For example, for an elevator, the ground level is considered as 0 and as a reference point, the floors above the ground level are indicated by positive numbers.
How do we use integers in real life situations?
You can use integers to help represent many real world situations, such as:
- Increases and decreases in temperature.
- Profits and losses of money.
- Locations above and below sea level.
Where are positive numbers used?
Positive numbers are used to identify quantities, such as the length of a line, the area of a circle, or the volume of a glass jar. They are used to identify the magnitude of physical quantities, as well.
What are the rules for adding positive and negative integers?
The Rules of Using Positive and Negative Integers 1 Addition. Whether you’re adding positives or negatives, this is the simplest calculation you can do with integers. 2 Subtraction. The rules for subtraction are similar to those for addition. 3 Multiplication. 4 Division.
How do you turn a negative number into a positive number?
Negative exponent rule: To change a negative exponent to a positive one, flip it into a reciprocal. Remind students that the rules stay the same with negative exponents — there just might be a few extra steps to follow. Negative numbers require a certain amount of abstract thinking that doesn’t always come naturally.
When subtracting integers remember to add the opposite?
When SUBTRACTING integers remember to ADD the OPPOSITE. What does that phrase mean? Keep – Change – Change is a phrase that will help you “add the opposite” by changing the subtraction problem to an addition problem. Keep the first number exactly the same. Change the subtraction sign to an addition sign.
How to subtract a negative integer using number line movements?
Subtracting a negative integer using number line movements is a bit trickier. Problem such as −4 − (−8) would mean that you start at −4, you get ready to move 8 units to the left (the “minus sign”), but the second minus sign reverses your direction, and you go 8 units to the right instead, ending at 4.