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  • Mathematics
  • Electronics

Integers Part 1



Find each sum.



Adding and Subtracting Integers Ex 01



Adding and Subtracting Integers Ex 02



Adding and Subtracting Integers Ex 04



The temperature in New York and Boston was the same at 2:00 p.m. By 3:00 p.m., the temperature in New York dropped 5 degrees, and the temperature in Boston dropped 10 degrees. By 4:00 p.m., the temperature in New York dropped 4 more degrees, and the temperature in Boston dropped 3 more degrees.

(a) Write an equation that models the change to the temperature in New York since

2:00 p.m.

(b) Write an equation that models the change to the temperature in Boston since 2:00

p.m.

(c) Where is it colder at 4:00 p.m., New York or Boston?



Adding and Subtracting Integers Ex 05



On Wednesday, Michael made withdrawals of $40, $65, and $110 from his savings account. On the same day, his sister Emma made withdrawals of $30, $75, and $100 from her savings account.

(a) Write a sum of negative integers to show Michael’s withdrawals on Wednesday.

Find the total amount Michael withdrew.

(b) Write a sum of negative integers to show Emma’s withdrawals on

Wednesday. Find the total amount Emma withdrew.



Adding and Subtracting Integers Ex 06



Max is playing a game. On his first turn, he lost 50 points. On his second turn, he lost 35 points on his third turn, he lost 65 points. Write a sum of three negative integers that models the change to Max’s score after his first three turns.



Adding and Subtracting Integers Ex 07



Find each sum.



Adding and Subtracting Integers Ex 08



Adding and Subtracting Integers Ex 09



Adding and Subtracting Integers Ex 10



Adding and Subtracting Integers Ex 11



Adding and Subtracting Integers Ex 12



Adding and Subtracting Integers Ex 13



Adding and Subtracting Integers Ex 14



Adding and Subtracting Integers Ex 15



A football team gained 7 yards on one play and then lost 19 yards on the next. Write a sum of integers to find the overall change in field position.



Adding and Subtracting Integers Ex 16



Mark had a negative balance (-$51.00) in his checking account before depositing a $51.00. What is the new balance of Mark’s checking account?



Adding and Subtracting Integers Ex 17



The owner of laundry store spent $1,070 on supplies. He earned $3,480. The owner’s profit is the amount he made after paying for supplies. Write a sum of integers that represents the owner’s profit.



Adding and Subtracting Integers Ex 18



Solve.



Adding and Subtracting Integers Ex 19



Adding and Subtracting Integers Ex 20



Adding and Subtracting Integers Ex 21



Adding and Subtracting Integers Ex 22



The record high January temperature in Boston is 58℉. The record low January temperature is -12℉. Find the difference before the high and low temperatures.



Adding and Subtracting Integers Ex 23



Jack starts his hike at an elevation below sea level (-235 feet). When he reaches the end of the hike, he is still below sea level at -117 feet. What was the change in elevation from the beginning of Jack’s hike to the end of the hike?



Adding and Subtracting Integers Ex 24



John is in a cave 50 feet below the cave entrance. He descends 15 feet then ascends 24 feet. Find his new position relative to the cave entrance.



Adding and Subtracting Integers Ex 25



Kristian wrote checks on Wednesday for $75 and $55. He also mode a deposit in his checking account $240. Find he overall change in the amount in his checking account.



Adding and Subtracting Integers Ex 26



Find the value of each expression.



Adding and Subtracting Integers Ex 27



Adding and Subtracting Integers Ex 28



Determine which expression has a greater value.



Adding and Subtracting Integers Ex 29



Adding and Subtracting Integers Ex 30



John earned 60 points in a video game. He lost 20 points, earned 58 points, then lost 10 more points. Write and evaluate on expression to find his final score in the video game.



Adding and Subtracting Integers Ex 31



Find the next two numbers in the pattern 6, 2, -2, -6, -10, … .



Adding and Subtracting Integers Ex 32



Evaluate each expression for a=-4,b=7,and c=-11.

a - b + c =

a + b - c =



Adding and Subtracting Integers Ex 33



Evaluate each expression for a=-4,b=7,and c=-11.

b - a - c =

c - a - b =



Adding and Subtracting Integers Ex 34



The highest recorded temperature on Earth is 136℉. The lowest is -129℉. What is the difference between these temperatures?



Adding and Subtracting Integers Ex 35



Draw a number line to show the opposite of each number.

What is the opposite of -4?

What is the opposite of 5?



Adding and Subtracting Integers Ex 36



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