Writing algebraic expressions
The sum of 27 and a number n.
27 + n
Write n + 16 in words. (use sum, difference, product, or quotient)
the sum of n and 16
3a-2 when a=4
3(4)-2 = 10
q -13
4z (use sum, difference, product, or quotient)
the product of 4 and z
p/4 + 3 when p = 12
12/4 + 3 = 6
twice a number x
2x
d-6 (use sum, difference, product, or quotient)
the difference of d and 6
7(n+4) when n=4
7(4+4) = 56
Mrs. Wheeler goes to the movies with her friends. She buys tickets for $6.50 each and popcorn that costs $2 a bag. Write an expression that models the amount of money Mrs. Wheeler spent. Identify the variables in the problem. (Double points if you get both correct!)
What is t= unknown # of tickets Mrs. Wheeler buys p= unknown # of bags of popcorn purchased $6.50t + $2p
the quotient of a number and 4.
n/4
r/6 (use sum, difference, product, or quotient)
the quotient of r and 6
(24/4 -c) * a when a=5 and c=1
(24/4 - 1) * 5 = 25
the cost of p photocopies if each one costs $0.15
.15p
6r-5
the difference of 6 times r and 5
(30/b) + 9 when b =6
(30/6) + 9 = 14