Writing Expressions
Fern has 7 red pens and b blue pens. How many pens does Fern have?
What is "7 + b" pens?
Roger bought some used CDs at a garage sale. He gave 9 CDs to his dad and kept 12 of them for himself. How many CDs did Roger buy at the garage sale?
What is "c - 9 = 12" or "c - 12 = 9" or "9 + 12 = c" or 12 + 9 = c"?
25y
What is an "expression"?
A(n) _________________ is an unknown part of an equation, represented by a letter.
What is a variable?
Sarah had 15 quarters. She used q quarters in the vending machine. How many quarters does Sarah have left?
What is "15 - q" quarters?
Felicia and Sam sold 103 muffins at the bake sale. Felicia sold 25 muffins. How many muffins did Sam sell at the bake sale?
What is "45 + s = 103" or "s + 45 = 103" or "103 - 45 = s" or 103 - s = 45"?
12x > 144
What is an "inequality"?
A statement that compares two quantities using <, >, ≤,≥, or ≠
What is an inequality?
Macy had d dollars. She gave half of her dollars to charity. How many dollars did she give to charity?
What is "1/2 d" dollars?
Francine walked 44 miles last month on her days off. She walked 4 miles each time. How many days did Francine have off?
What is "4d = 44" or "44/4 = d" or 44/d = 4"?
x/3 = 10
What is "x = 30"?
19f = 63
What is an "equation"?
A mathematical sentence that contains an equals sign a(n) _______________.
What is an equation?
Alison took 51 candy bars and split them into groups to give out for Halloween. She put 3 bars in each group. How many bunches did Alison make?
What is "51/3 = b" or "51/b = 3" or "3b = 51"
15 * x = 75
What is "x = 5"?
7(1/2 + r)
What is an "expression"?
A(n) ________________ is a combination of numbers, variables, and symbols that illustrate a mathematical phrase.
What is an expression?
x/7 - 4 = 3
What is "x = 1"?
34v - 17 = 12u + 87
What is an "equation"?
A number multiplied by a variable in an algebraic expression.
What is the coefficient?