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Addition Equations
Subtraction Equations
Multiplication Equations
Division Equations
Equations Knowledge
100
u + 13 = 67
u = 54
100
h - 7 = 11
h = 18
100
3 r = 24
r = 8
100
f / 4= 12
f = 48
100
Finish this phrase that we say a lot: "Whatever you do to one side of the equation, __________"
you have to do to the other side of the equation!
200
y + 9 = 52
y = 43
200
j - 18 = 3
j = 21
200
8 q = 56
q = 7
200
s / 7 = 5
s = 35
200
In your own words, how would you explain the definition of an equation? (hint: think about the word in the word EQUAtion)
Sample answers: An equation says that two things are equal. The left side is equal to the right side. An equation is like a math sentence that has numbers, operations, variables, and an equal sign.
300
36 = g + 12
g = 24
300
82 = k - 12
k = 94
300
6 x = 18
x = 3
300
p / 12 = 11
p = 132
300
What is a variable? Give one example.
A variable is a letter that stands for a number. Examples: a,b,c,x,y,z,...
400
100 = b + 66
b = 34
400
176 = n - 27
n = 203
400
81 = 9x
x = 9
400
w / 21 = 3
w = 63
400
How do you check your answer after solving an equation? (hint: what do you always do before you circle your final answer?)
We always check our answer by plugging it in to the original equation.
500
Write and solve the equation: A number plus 15 will be 34.
x = 19
500
Write and solve the equation. A number minus 56 is 98.
x = 154
500
Write and solve the equation. 7 times a number equals 77.
x = 11
500
Write and solve the equation. A number divided by 6 will be 5.
x = 30
500
What does inverse mean? Give one example.
Inverse means opposite. Example: Addition/Subtraction or Multiplication/Division