Solve equations involving rational numbers using addition and subtraction
Objectives
Student will be able to:
use addition or subtraction to solve equations involving rational numbers.
Exercises
Complete the exercises. Show all work.
1.
A book shelf can safely hold 15
pounds of books. One of the shelves already holds
pounds of books. How many more pounds can the shelf hold?
The shelf can hold another
pounds of books.
Check student's work.
1
.
Correct
Incorrect
Not Assigned
2.
Juanita adopted a dog from the animal shelter. While at the shelter, the dog lost
pounds. It now weighs
pounds. What was the weight of the dog in pounds before its weight loss?
The dog weighed
pounds before its weight loss.
Check student's work.
2
.
Correct
Incorrect
Not Assigned
3.
JoAnne is cooking a turkey for dinner. It has been in the oven for
hours. It takes
hours to completely cook the turkey. How many more hours does the turkey need to cook?
The turkey needs to cook for another
hours.
Check student's work.
3
.
Correct
Incorrect
Not Assigned
4.
Carlo and his brother are building a storage shed. The length of a board they are using is
feet long. Carlo cuts off
feet from the board. What is the length of the remaining piece of board?
The length of the remaining piece of board is
feet.
Check student's work.
4
.
Correct
Incorrect
Not Assigned
5.
The variable
n
represents a rational number. What is the number, if when it is decreased by
, it equals
?
The number is
.
Check student's work.
5
.
Correct
Incorrect
Not Assigned
6.
The variable
n
represents a rational number. When the number is increased by
it equals
. What is the number?
The number is
.
Check student's work.
6
.
Correct
Incorrect
Not Assigned