Terminology
Is this an expression or equation?
3x + 2 = 8
equation
Write an expression for "the sum of x and y"
x+y
2a + 3a
5a
a = 6
Which is bigger?
100g or 1kg?
1kg
How many variables are there in this expression?
4a + 3b - 2c
3
a + b
5
8f - 5f
3f
3a + 2 = 11
a = 3
Substitute a = 4 and simplify:
2a + 1
9
How many terms are there in this equation?
3a + 4b = 2c
3
Write an expression for 5 times b plus 3
5b + 3
4a + 3b + 2a - 2b
6a + b
5 = 2a - 3
a = 4
Write a joke on your whiteboard. If it's funny / makes sense - you get the points.
:)
Is this a term, expression, or equation?
3a
term
Simplify is a=2, b=3, c=1
ab + 2c
8
2a + 3b + 4ab
2a + 3b + 4ab
a/3 + 1 = 4
a = 9
The sum of a number (x) and 4 is divided by 2, and the answer is 10.
Write an expression for this and then solve for x
x + 4 / 2 = 10
x + 4 = 20
x = 16
Write an equation with at least three terms and two different variables
e.g. 2a + 3b = 54
A number p is doubled and then divided by 7. The result is 4.
2p / 7 = 4
2p = 28
p = 14
4abc + 2ab + 3b - 2abc + 3c + 4ab
2abc + 6ab + 3b + 3c
3(a + 2) = 21
a = 5
Evaluate 6x + 9 if x = -1
6(-1) + 9
-6 + 9 = 3