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7.2a Classwork (1)

Last updated over 5 years ago

8 questions

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Essential Question: How can you use addition or subtraction to solve an equation?

1 Activity: Solving an Equation

Question 1

1.

a. Use a model to solve n+3=7

The solution is n = _____

Question 2

2.

b. Describe how you could check your answer in part (a).

Question 3

3.

c. Which model below represents the solution of n+1=9 ?

2 activity: Solving Equations

Question 4

4.

Here's how I want you to solve the next 3 problems:
1. in red, use the fattest scribble line to put a circle on the side of the balance where your variable is
2. in orange, use the fattest square and click some squares on either side to represent the constants
3. in green, cross off the same amount of squares on ech side
4. in purple, write what you have left above the balance
5. in dark purple, rewrite the equation with the variable replaced by the solution
6. place a green checkmark above the equal sign if correct
You only need to sign this question to get credit for it.

Question 5

5.

Here's how I want you to solve the problem 5:
1. in red, use the fattest scribble line to put a circle on the side of the balance where your variable is
2. in orange, use the fattest square and click some squares on either side to represent the constants
3. in green, cross off the same amount of squares on ech side
4. in purple, write what you have left above the balance
5. in dark purple, rewrite the equation with the variable replaced by the solution
6. place a green checkmark above the equal sign if correct

Question 6

6.

Here's how I want you to solve the problem 5:
1. in red, use the fattest scribble line to put a circle on the side of the balance where your variable is
2. in orange, use the fattest square and click some squares on either side to represent the constants
3. in green, cross off the same amount of squares on ech side
4. in purple, write what you have left above the balance
5. in dark purple, rewrite the equation with the variable replaced by the solution
6. place a green checkmark above the equal sign if correct

Question 7

7.

Here's how I want you to solve the problem 5:
1. in red, use the fattest scribble line to put a circle on the side of the balance where your variable is
2. in orange, use the fattest square and click some squares on either side to represent the constants
3. in green, cross off the same amount of squares on ech side
4. in purple, write what you have left above the balance
5. in dark purple, rewrite the equation with the variable replaced by the solution
6. place a green checkmark above the equal sign if correct

3 activity: Solving Equations Using Mental Math

Question 8

8.

Write a question that represents the equation. Use mental math to answer the question. Then check your solution. The word 'question' is being used loosely here. Use my example as an... uh... example.