variables
what is a variable?
a letter to represent an unknown
Which comes first: parentheses or addition?
parentheses
What grade does Ms. Raty teach?
6th
twice something means to do what operation?
2x
8 x 9
72
Which one is the variable: 5m + 8
m
4 x 5 - 5=
15
When is Ms. Raty's birthday?
November 10th
Ms. Raty drank three cups of coffee on Monday. She drank some more on Tuesday. Write an expression for this situation.
3 + X
507 - 499=
8
Can there be more than one variable in an expression? Yes or no.
yes
4 + 3(2)=
10
What temperature does Ms. Raty like her food?
cold
2e + 5 + 6e can be combined by like terms how?
8e + 5
3.5 x 2=
7 or 7.0
Ms. Raty had 5 chickens on Friday. She bought some more on Saturday. Write an expression to represent this situation.
5 + C
20 — 7 + 2(4 — 1)
What is Ms. Raty's favorite food?
sushi
8 times the sum of w and 5: write an expression.
8 (w + 5)
3.4 x 5.6 =
19.04
Solve for X:
5x + 10= 45
x = 7
What does every letter in PEMDAS stand for?
parentheses, exponent, multiply, divide, add, subtract
Reeses
Mary made 18 fudge brownies and 16 walnut brownies. She shared them equally with her friends ( f ). Which expression represents the total number of brownies each friend received?
16 + 18 /f
345.6 + 45=
390.6