Vocabulary Terms
A letter or symbol that represents an unknown value.
VARIABLE
Identify the variable(s):
-3w + 5 - r = -10
w and r
-18 + 8
-18 + 8 = -10
Bell 1 typically has 20 students. On Wednesday, some students, s, were absent and the total count was 15. Write an equation to represent this scenario.
20 - s = 15
OWhat is the solution to the equation?
13 = 10 + r
13 = 10 + r
r = 3
Check: 13 = 10 + (3)
13 = 13
A number that is by itself.
CONSTANT
How many terms are in the following equation?
m + 45 - 10 = -375m
4 TERMS
-7 - 5
KEEP - CHANGE - CHANGE
-7 -5
-7 + (-5) = -12
Ms. Anderson had some students, w, score 100% on their unit test. Mrs. Forsley had 5 students score 100% on their unit test. Write an expression to represent the number of students in Ms. Anderson and Mrs. Forsley's class who scored 100%.
w + 5
What is the solution to the equation?
m / 10 = -4
m / 10 = -4
m = -40
Check: (-40) / 10 = -4
-4 = -4
A mathematical number sentence that includes an equal sign.
EQUATION
What is the coefficient in the following equation?
12 - 5g = 38
The COEFFICIENT is -5
|-20| / 4
|-20| / 4
20 / 4 = 5
Mrs. Maleeswaran made some treats, t, for the 6th grade team. If she wanted to bake treats for the entire building, she would need 12 times as many. Write an expression that represents the number of treats Mrs. Maleeswaran will bake in order to share with the entire building.
12t
t x 12
What is the solution to the equation?
-6 + c = -15
-6 + c = -15
c = -9
Check: -6 + (-9) = -15
-15 = -15
-15 = -15
The number that is connected to an unknown value.
COEFFICIENT
Write down the expression in the following equation:
100b - 34 + 28m = -85
The EXPRESSION is 100b - 34 + 28m
(-10)(-5)
(-10)(-5) = 50
(-10) x (-5) = 50
Mrs. Maguale has already started her Thanksgiving prep! She went to the store with $85, bought a turkey (t), and received $64 in change. Write an equation that represents Mrs. Maguale's spending at the store.
85 - t = 64
What is the solution to the equation?
5 + w = -10
5 + w = -10
w = -15
Check: 5 + (-15) = -10
-10 = -10
The parts of an expression or equation that tell us which operations to perform.
OPERATORS
Identify the constants in the following equation:
7v + 25 - 5y = -18
The CONSTANTS are 25 and -18
- |-45 - (-10)|
- |-45 - (-10)|
- |-45 + 10|
- |-35|
= -35
Mrs. Halvorsen had some cupcakes. She shared them equally with her 3 classes. Write an expression with c representing the number of cupcakes.
c / 3
What is the solution to the equation?
-8k = -48
-8k = -48
k = 6
Check: -8 (6) = -48
-48 = -48