Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 21

Posljednje ažuriranje over 1 year ago

6.EE.2.c

6.EE.4

7.EE.1

6.EE.2.c

6.EE.4

7.EE.1

6.EE.2.c

6.EE.4

7.EE.1

6.EE.2.c

6.EE.4

7.EE.1

6.EE.2.c

6.EE.4

7.EE.1

6.EE.2.c

6.EE.4

7.EE.1

6.EE.2.c

6.EE.4

7.EE.1

6.EE.2.c

6.EE.4

7.EE.1

"Source: Open Up Resouces (Download for free at openupresources.org.)"

Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 21

Posljednje ažuriranje over 1 year ago

Noah says that9x - 2x + 4x is equivalent to 3x , because the subtraction sign tells us to subtract everything that comes after 9x.
Elena says that 9x - 2x + 4x is equivalent to 11x, because the subtraction only applies to 2x .
Do you agree with either of them?

I agree with Noah

I agree with Elena

I don't agree with either of them.

6.EE.2.c

6.EE.4

7.EE.1

Identify the error in generating an expression equivalent to 4 + 2x - \frac{1}{2}(10 - 4x). Then correct the error.
4 + 2x + \frac{-1}{2}(10 - 4x).
4 + 2x -5 + 2x.
-1

6.EE.2.c

6.EE.4

7.EE.1

Select all expressions that are equivalent to 5x - 15 - 20x +10.

6.EE.2.c

6.EE.4

7.EE.1

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?
Write an inequality to represent this situation.

6.EE.2.c

6.EE.4

7.EE.1

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?
Solve the inequality and describe what it means in the situation.

6.EE.2.c

6.EE.4

7.EE.1

Solve the inequality that represents each story.
For every $9 that Elena earns, she gives x dollars to charity. This happens 7 times this month. Elena wants to be sure she keeps at least $42 from this month’s earnings.
7(9 - x)\ge 42

6.EE.2.c

6.EE.4

7.EE.1

Solve the inequality that represents each story.
Lin buys a candle that is 9 inches tall and burns down x inches per minute. She wants to let the candle burn for 7 minutes until it is less than 6 inches tall.
9 - 7x < 6

6.EE.2.c

6.EE.4

7.EE.1

A certain shade of blue paint is made by mixing 1\frac{1}{2} quarts of blue paint with 5 quarts of white paint. If you need a total of 16.25 gallons of this shade of blue paint, how much of each color should you mix?

6.EE.2.c

6.EE.4

7.EE.1

"Source: Open Up Resouces (Download for free at openupresources.org.)"

Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 21

Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 21

Noah says that9x - 2x + 4x is equivalent to 3x , because the subtraction sign tells us to subtract everything that comes after 9x.Elena says that 9x - 2x + 4x is equivalent to 11x, because the subtraction only applies to 2x .Do you agree with either of them?

Identify the error in generating an expression equivalent to 4 + 2x - \frac{1}{2}(10 - 4x). Then correct the error.4 + 2x + \frac{-1}{2}(10 - 4x).4 + 2x -5 + 2x.-1

Select all expressions that are equivalent to 5x - 15 - 20x +10.

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?Write an inequality to represent this situation.

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?Solve the inequality and describe what it means in the situation.

Solve the inequality that represents each story. For every $9 that Elena earns, she gives x dollars to charity. This happens 7 times this month. Elena wants to be sure she keeps at least $42 from this month’s earnings.7(9 - x)\ge 42

Solve the inequality that represents each story. Lin buys a candle that is 9 inches tall and burns down x inches per minute. She wants to let the candle burn for 7 minutes until it is less than 6 inches tall.9 - 7x < 6

A certain shade of blue paint is made by mixing 1\frac{1}{2} quarts of blue paint with 5 quarts of white paint. If you need a total of 16.25 gallons of this shade of blue paint, how much of each color should you mix?

Noah says that9x - 2x + 4x is equivalent to 3x , because the subtraction sign tells us to subtract everything that comes after 9x.Elena says that 9x - 2x + 4x is equivalent to 11x, because the subtraction only applies to 2x .Do you agree with either of them?

Identify the error in generating an expression equivalent to 4 + 2x - \frac{1}{2}(10 - 4x). Then correct the error.4 + 2x + \frac{-1}{2}(10 - 4x).4 + 2x -5 + 2x.-1

Select all expressions that are equivalent to 5x - 15 - 20x +10.

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?Write an inequality to represent this situation.

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?Solve the inequality and describe what it means in the situation.

Solve the inequality that represents each story. For every $9 that Elena earns, she gives x dollars to charity. This happens 7 times this month. Elena wants to be sure she keeps at least $42 from this month’s earnings.7(9 - x)\ge 42

Solve the inequality that represents each story. Lin buys a candle that is 9 inches tall and burns down x inches per minute. She wants to let the candle burn for 7 minutes until it is less than 6 inches tall.9 - 7x < 6

A certain shade of blue paint is made by mixing 1\frac{1}{2} quarts of blue paint with 5 quarts of white paint. If you need a total of 16.25 gallons of this shade of blue paint, how much of each color should you mix?

Noah says that9x - 2x + 4x is equivalent to 3x , because the subtraction sign tells us to subtract everything that comes after 9x.
Elena says that 9x - 2x + 4x is equivalent to 11x, because the subtraction only applies to 2x .
Do you agree with either of them?

Identify the error in generating an expression equivalent to 4 + 2x - \frac{1}{2}(10 - 4x). Then correct the error.
4 + 2x + \frac{-1}{2}(10 - 4x).
4 + 2x -5 + 2x.
-1

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?
Write an inequality to represent this situation.

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?
Solve the inequality and describe what it means in the situation.

Solve the inequality that represents each story.
For every $9 that Elena earns, she gives x dollars to charity. This happens 7 times this month. Elena wants to be sure she keeps at least $42 from this month’s earnings.
7(9 - x)\ge 42

Solve the inequality that represents each story.
Lin buys a candle that is 9 inches tall and burns down x inches per minute. She wants to let the candle burn for 7 minutes until it is less than 6 inches tall.
9 - 7x < 6

Noah says that9x - 2x + 4x is equivalent to 3x , because the subtraction sign tells us to subtract everything that comes after 9x.
Elena says that 9x - 2x + 4x is equivalent to 11x, because the subtraction only applies to 2x .
Do you agree with either of them?

Identify the error in generating an expression equivalent to 4 + 2x - \frac{1}{2}(10 - 4x). Then correct the error.
4 + 2x + \frac{-1}{2}(10 - 4x).
4 + 2x -5 + 2x.
-1

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?
Write an inequality to represent this situation.

The school marching band has a budget of up to $750 to cover 15 new uniforms and competition fees that total $300. How much can they spend for one uniform?
Solve the inequality and describe what it means in the situation.

Solve the inequality that represents each story.
For every $9 that Elena earns, she gives x dollars to charity. This happens 7 times this month. Elena wants to be sure she keeps at least $42 from this month’s earnings.
7(9 - x)\ge 42

Solve the inequality that represents each story.
Lin buys a candle that is 9 inches tall and burns down x inches per minute. She wants to let the candle burn for 7 minutes until it is less than 6 inches tall.
9 - 7x < 6