Real-World Examples of Operations with Integers in Everyday Life

📚 Quick Study Guide

• 🌡️ Integers include positive whole numbers, negative whole numbers, and zero.
• ⬆️ Positive integers represent increases, gains, or values above zero.
• ⬇️ Negative integers represent decreases, losses, or values below zero.
• 📈 Operations with integers follow specific rules for addition, subtraction, multiplication, and division. For example, a negative times a negative is a positive.
• 💸 Real-world examples include temperature, money (debt/credit), altitude, and sports scores.

Practice Quiz

1. What does a negative integer most commonly represent in a bank account?
   1. A deposit
   2. A credit
   3. A debit
   4. An interest payment
2. An elevator starts at the ground floor (0). It goes up 7 floors and then down 4 floors. What integer represents the elevator's final position?
   1. -3
   2. 3
   3. 11
   4. -11
3. If the temperature is 5°C and drops by 8°C, what is the new temperature?
   1. 13°C
   2. -3°C
   3. 3°C
   4. -13°C
4. A football team gains 10 yards, loses 5 yards, and then gains 3 yards. What is their total yardage change?
   1. 18 yards
   2. 8 yards
   3. 2 yards
   4. -2 yards
5. Sarah owes her friend $15. She pays back $8. What integer represents how much she still owes?
   1. $7
   2. -$7
   3. $23
   4. -$23
6. A submarine is at a depth of -200 feet. It ascends 75 feet. What is its new depth?
   1. -275 feet
   2. 275 feet
   3. -125 feet
   4. 125 feet
7. Which of the following scenarios best represents the integer -5?
   1. Earning $5
   2. Climbing 5 stairs
   3. Losing 5 points in a game
   4. Finding $5