Vocabulary
What is the inverse of Addition?
What is subtraction?
x - 7 = 5
x = 12
What step and side (left or right) did first error occur?
Step 1 v - 5 = 10
Step 2 v - 5 + 5 = 10 - 5
Step 3 v - 0 = 5
Step 4 v = 5
Step 5 5 - 5 = 5
Step 2, right
Lisa is cooking muffins. The recipe calls for 7 cups of sugar. She has already put in 2 cups. Write the one step equation to solve how many cups, c Lisa has left to add.
c + 2 = 7
Do the interior or exterior angles add to 180º?
What are interior angles
A mathematical sentence that shows that two expressions are equivalent.
What is an equation?
6y = 30
y = 5
What step and side (left or right) did first error occur?
Step 1 v + 5.2 = 12
Step 2 v + 5.2 - 5. 2 = 12 - 5.2
Step 3 v+ 0 = 6.8
Step 4 v = 6.8
Step 5 12 - 5.2 = 6.8
Step 5, left
At a restaurant, Mike and his three friends decided to divide the bill evenly. If each person paid $13 then what was the total bill, b? Write a one-step equation to show how you would solve.
b/4 = 13
or
1/4b = 13
If you are trying to find one missing side length on a polygon, what do you need on the right side of the equation?
perimeter
When a variable is being multiplied by a fraction, you multiply both sides by the
What is a reciprocal?
r + 10 = 23.5
r = 13.5
What step and side (left or right) did first error occur?
Step 1 5c = 10
Step 2 5/1 X 1/5c = 10/1 X 1/5c
Step 3 5/5c = 2
Step 4 1/1c = 2
Step 5 c = 2
Step 6 5(2) = 7
Step 2, right
Clara has $67 in her piggy bank. She spends x dollars on a dog bowl which leaves her with $57.4.
57.4 + x = 67
What is the one step equation to find length of the side on a square with an perimeter of 25?
What is 4s = 25
You need to do what to get the variable on one side of the equation by itself.
What is a inverse operation?
w/8 = 2
w = 16
David went to the store and bought 4 packs of gum for $5.52. Write a one-step equation to show how much one pack of gum cost. $5.52n = 4
What is the first error the operation or the coefficient?
What is the coefficient
Maria baked x cookies. She distributed the cookies equally among six of herneighbors. Each neighbor received 18 cookies.
x/6 = 18
or
1/6x = 18
What is the one-step equation to find the missing angle d on a right triangle with a 45º. Need to simplify by combining like terms.
d + 135 = 180
The goal of solving an equation is to
What is the value of a variable?
What is isolate the variable
2/3y = 24
y = 36
I went to the mall with $55 and came home with 7. Write an algebraic equation to find how much money I spent at the mall. What is the first error the operation or the constant.
x - 7 = 55
What is the operation?
Linda has y fancy pendants. Kathy owns 12 fancy pendants, which is four times as many as Linda.
4y = 12
What is the one step equation to find the height of a triangle with a base of 30 and an area of 15. The equation needs to be in simplified.
what is 15h = 75