Expression
If r = 14, what is r + 36?
r + 36 = 50
r = 18 - 16
r = 2
Substitution
3 x 5 + 9
24
17 - 20
-3
If t = 37, what is 11 + t + 3
51
x - 78 = 25
x = 103
The connection between addition and subtraction. Also, multiplication and division.
Opposite
6 x 6 ÷ 2 x 3
54
24 - 57
-33
If a = 8 and b = 24, what is a + b + 7
39
17 - s = 29
-12
A symbol, usually a letter, that has a value
Variable
9 + 2 x 2 - (21 - 12)
4
-65 + 24
-41
If a = 57 and b = 24, what is b + a ?
81
x + 14 = 22
What is a number worth less than 0?
A negative number
22 + (6 x 3) - 22
0
-105 + 68
-37
If p = 102, g = 27, and c = 63, what is p + g + c?
192
t + 78 = 144
t = 66
33 - (55 - 29) x 3 ÷ 3
1
-24 - 26 + 5 -15
-60