A letter used to represent an unknown number
What is a variable?
2k + 5 = 17
What is 6 ?
3a - 5 = 4
What is 3 ?
m/5 + 4 = 12
What is 40 ?
The opposite of addition
What is subtraction?
2a + 11 = 35
What is 12 ?
5m - 7 = 23
What is 6 ?
Ms. Moreau spent $36 dollars at Target the other day. She bought a new shirt for $15, and bought 7 pens. How much did each pen cost?
Write an equation and solve.
15 +7c = 36
c = $3
Each pen cost $3.
2r + 39 = 65
What is 13 ?
-6k - 5 = 43
What is -8 ?
Aiden spent half of his savings on a new bike. He spent $160 more dollars on new shoes. He now has -$100 in his savings. How much did he start with?
x/2 -160 = -100
x=$120
Aiden started with $120 in his savings.
-12s + 27 = 171
What is -12 ?
4j - 7.1 = 29
What is 9.025 ?
g/11 + 37 = -128
What is -1815 ?
The best math teachers ever!!!!
Who are Ms. Mooney and Ms. Moreau?
-5x + 3.2 = 8.6
What is -1.08 ?
21q - 39 = 234
What is 13 ?
x/2.1 + 3.6 = 1.4
What is -4.62?