Name____________________________
LESSON
1-1
Date____________
HW #1
Adding Integers with the Same Sign
Practice and Problem Solving:
Find each sum. White counters are positive. Black counters are negative.
1. 5   3 
2. 4   7 
a. How many counters are there? _______
a. How many counters are there? ________
b. Do the counters represent positive
b. Do the counters represent positive
or negative integers? _________________
c. 5   3   _________
or negative integers? _________________
c.
4   7   ________
Model each addition problem on the number line to find each sum.
3. 4   2   _______
4. 6   6   _______
5. 3   6   _______
6. 7   5   _______
Find each sum.
7. 7   1  _______
9. 36   17   _______
8. 5   4   _______
10. 51   42  _______
11. 98  126  _______
12. 20   75   _______
13. 350   250   _______
14. 110   1200   _______
Solve.
15. A construction crew is digging a hole. On the first day, they dug a hole 3 feet
deep. On the second day, they dug 2 more feet. On the third day, they dug 4
more feet. Write a sum of negative numbers to represent this situation. Find
the total sum and explain how it is
related to the problem.
________________________________________________________________________________________
Name____________________________
LESSON
1-1
Date____________
HW #1
Adding Integers with the Same Sign
Practice and Problem Solving:
Solve.
1. A grocery sells green apples and red apples. On Monday, the store put 500 of each kind of apple
on display. That day, the store sold 42 red apples and 57 green apples. On Tuesday, the store
sold 87 red apples and 75 green apples. On Wednesday, the store sold 29 red apples and 38
green apples.
a. Write an addition expression using negative integers to show the number
of red apples the store sold.
____________________________________________________________________________________
b. Write an addition expression using negative integers to show the number
of green apples the store sold.
____________________________________________________________________________________
c. Did the store have more red apples or green apples left over? Explain.
____________________________________________________________________________________
____________________________________________________________________________________
2. A hotel has 18 floors. The hotel owner believes the number 13 is unlucky. The first 12 floors are
numbered from 1 to 12. Floor 13 is numbered 14, and the remaining floors are numbered from 15
to 19. The hotel manager starts on the top floor of the apartment building. He rides the elevator
two floors down. The doors open and a hotel guest gets in. They ride the elevator three floors
down. The hotel guest gets off the elevator. The hotel manager rides the elevator the remaining
floors down to the first floor.
a. Write an addition expression using negative integers to show the number
of floors the hotel manager rode down in the elevator.
____________________________________________________________________________________
b. On what floor did the hotel guest get off the elevator? Explain.
____________________________________________________________________________________
____________________________________________________________________________________