Writing Expressions
Branly has 5 red Among Us stickers and b blue Among Us stickers. How many stickers does Branly have?
"5 + b" Among Us stickers
Edvin bought some new Among Us plushies at a sale. He gave 9 plushies to Chris and kept 12 of them for himself. How many Among Us plushies did Edvin buy at the sale?
"a - 9 = 12" or
"a - 12 = 9" or
"9 + 12 = a" or
"12 + 9 = a"
25y
EXPRESSION
An _________ is a mathematical phrase that contains numbers, variables, or both. _______ never have an equal sign.
Expression
How many terms are in the following expression:
3x + 2y – 2x + 6
4
Sarah had 15 quarters. She used q quarters in the vending machine. How many quarters does Sarah have left?
"15 - q" quarters left
Jackie and Sam sold 103 cookies at the bake sale. Sam sold 25 cookies. How many cookies did Jackie sell at the bake sale?
"25 + j = 103" or
"j + 25 = 103" or
"103 - 25 = j" or
"103 - j = 25"
145t + 3
Expression
An _________ is a mathematical sentence that says two expressions are equal. ________ always have an equal sign.
Equation
What are the variables in this expression?
3x + 5y
x and y
Macy had d dollars. She gave half of her dollars to charity. How many dollars did she give to charity.
"1/2 d" dollars
Jenna walked 40 miles last month on her days off. She walked 4 miles each time. How many days did Jenna have off?
"4d = 40" or
"40/4 = d" or
"40/d = 4"
19f = 63
Equation
A ________ is a letter that represents an unknown amount.
Variable
Is this an expression or an equation?
(3 + a) - 2b
Expression
A candy company divided c bags of candy into 12 boxes. How many bags of candy are in each box?
"c/12" bags
Andrea took 50 easter eggs and split them into baskets to give out for Easter. She put 5 eggs in each basket. How many baskets did Andrea make?
"50/5 = b" or
"50/b = 5" or
"5b = 50"
7(1/2 + r)
Expression
A _________ is a number multiplied by a variable. A _________ is written immediately in front of the variable
Coefficient
How many terms, variables and coefficents are there in this expression?
5x - 8 + 3 + 2y - 5
Term: 5
Variables: 2 (x and y)
Coefficients: 2 (5 and 2)
Five times the sum of 4 and t
"5(4 + t)"
The sum of 13 and the quotient of 6 and x is equal to 15.
"13 + 6/x = 15"
34v - 17 = 12u + 87
Equation
A ______ is a part of an expression or equation that is added or subtracted. Each _____ in an expression is separated by a + sign or - sign.
Term
Cooper drew p pictures. Jared drew 80 fewer pictures than Cooper. Choose the expression that shows how many pictures Jared drew. Write an expression.
p − 80