7.6.22

1

1. Jada says that she can tell the expression equals 0 just by looking at it. Is Jada correct?

Explain or show how you know.

4

2. In each row, decide whether the expression in column A is equivalent to the expression in column B.  

If they are not equivalent, show how to change one expression to make them equivalent. 

a) Equivalent? Yes or No? _______ 
b) Equivalent? Yes or No? _______ 
c) Equivalent? Yes or No? _______ 
d) Equivalent? Yes or No? _______ 

1

3. For each situation, write an expression for the new balance using as few terms as possible.
a) A checking account has a balance of -$126.89. A customer makes two deposits, one 3 & 1/2 times the other, and then withdrawl $25.

1

3. For each situation, write an expression for the new balance using as few terms as possible.
b) A checking account has a balance of $350. A customer makes two withdrawals, one $50 more than the other. Then he makes a deposit of $75.

2

4. Tyler is using the distributive property. Look at his work. Mai thinks Tyler's answer is incorrect. She says, "If the expressions are equivalent then they are equal for any value of the variable. Why don't you try to substitute the same value for x in all the equations and see where they are not equal?"

a) Find the step where Tyler made an error.

*In the show your work section, plug in 1 for x and show your work. This will help you find the step where Tyler made his error.

1

4b. Explain what he did wrong.

1

4c. Correct Tyler's work.

1

5a. If (11+x) is positive, but (4+x) is negative, what is one number that x could be?

1

5b. If (-3+y) is positive, but (-9+y) is negative, what is one number that y could be?

1

5c. If (-5+z) is positive, but (-6+z) is negative, what is one number that z could be?

3

EXIT TICKET
Match each expression in column A with an equivalent expression from column B.
Show or explain your reasoning.

Draggable item		Corresponding Item
8(r-t)		b) (12r + 2t) - (4r + 10t)
8(r+t)		c) 12(r+t) - 6(r+t) + 4(r+t) -2(r+t)
8r+7t		a) 12r + t - 4r + 6t

1. Jada says that she can tell the expression equals 0 just by looking at it. Is Jada correct?Explain or show how you know.

3. For each situation, write an expression for the new balance using as few terms as possible. a) A checking account has a balance of -$126.89. A customer makes two deposits, one 3 & 1/2 times the other, and then withdrawl $25.

3. For each situation, write an expression for the new balance using as few terms as possible. b) A checking account has a balance of $350. A customer makes two withdrawals, one $50 more than the other. Then he makes a deposit of $75.

4b. Explain what he did wrong.

4c. Correct Tyler's work.

5a. If (11+x) is positive, but (4+x) is negative, what is one number that x could be?

5b. If (-3+y) is positive, but (-9+y) is negative, what is one number that y could be?

5c. If (-5+z) is positive, but (-6+z) is negative, what is one number that z could be?

EXIT TICKETMatch each expression in column A with an equivalent expression from column B.Show or explain your reasoning.

1. Jada says that she can tell the expression equals 0 just by looking at it. Is Jada correct?

Explain or show how you know.

3. For each situation, write an expression for the new balance using as few terms as possible.
a) A checking account has a balance of -$126.89. A customer makes two deposits, one 3 & 1/2 times the other, and then withdrawl $25.

3. For each situation, write an expression for the new balance using as few terms as possible.
b) A checking account has a balance of $350. A customer makes two withdrawals, one $50 more than the other. Then he makes a deposit of $75.

EXIT TICKET
Match each expression in column A with an equivalent expression from column B.
Show or explain your reasoning.