Miscellaneous
Multiplication & Addition
Multiplication & Subtraction
Models/Miscellaneous
100
A letter used to represent an unknown number
What is a variable?
100
2k + 5 = 17
What is k = 6?
100
3a - 5 = 4
What is a = 3?
100
What is x = 1?
200
The inverse of addition
What is subtraction?
200
2a + 11 = 35
What is a = 12?
200
5m - 7 = 23
What is m = 6?
200
What is x = 6/5?
300
The four basic operations
What are addition, subtraction, multiplication, and division?
300
2r + 39 = 65
What is r = 13?
300
6k - 5 = 43
What is k = 8?
300
What is x = 2?
400
A number right in front of a variable
What is a coefficient?
400
12s + 27 = 171
What is s = 12?
400
4j - 71 = 29
What is j = 25?
400
4 + 1/2x - 8 = 12
What is x = 32?
500
The inverse of subtraction.
What is addition?
500
19b + 314 = 1663
What is b = 71?
500
21q - 39 = 234
What is q = 13?
500
3x + 2x + 20 = 50
What is x = 6?