ROUND ROBIN Writing Expressions Evaluating Expressions Equivalent Expressions
ROUND ROBIN Writing Expressions, Evaluating Expressions & Equivalent Expressions
Evaluate. 3 a – 2 b when a = 2 and b = 3
Renee’s hours of volunteer work are 3 hours less than twice as many as Jill’s. If the number of hours of Jill’s volunteer work is represented by j, write an expression that represents Renee’s hours of volunteer work?
Barbara spent x dollars at the video store. If Rachel spent 4 times the amount Barbara spent at the video store, how much did Rachel spend, in dollars? Write an expression.
Robert had 3 less than twice as many mathematics problems for homework on Tuesday than on Monday. If m represents the number of homework problems on Monday, write an expression that represents the number of homework problems Robert had on Tuesday?
Nadia and Sergio are saving money to buy bicycles. Nadia has $10 more than twice as many dollars as Sergio. If Sergio has x dollars, which expression represents how much Nadia has saved? A (2 x) • 10 B x + 2 • 10 C 2(x + 10) D 2 x + 10
Robert has 2 more than 3 times the number of cards that Amanda has. Which expression represents the number of cards that Robert has? A 2 x + 3 B 2 x – 3 C 3 x + 2 D 3 x – 2
Evaluate. a² + b² when a = 3 and b = 6
Which correctly represents the statement, “the product of 2 and a number, y, subtracted from 4”? ◦
Which of the following expressions represents 8 times a number, n, less than 2? a) 8 n – 2 b) 2 – 8 n c) 8 – 2 n d) 2 n – 8
MIDTERM REVIEW PART 2
What are the terms? Coefficients? Constant? x + 3 – 55 j + 3 2 s
How many terms is this? Coefficients? Constant? 6 h – 100 + 96 r
Coefficients? 3 x – 4 p – 2 a) -4 b) 4 c) 3 d) -2
Find an expression equivalent to 6 x + 32 y. a) b) c) d) 36 xy 38(x + y) 2(3 x + 32 y) 2(3 x + 16 y)
Which of these expressions is equivalent to 3 f – 11 f? a) -14 f b) 8 f c) -8 f d) 14 f
Write the equivalent expression to 4 d – 2 – 6 d + 3.
Simplify. 8 d + 6 d
Find an expression equivalent to 4 r – 18.
Vincent's cell phone plan charges a $10. 00 monthly access fee and $0. 04 for each text message sent. Which expression below represents the total monthly charge Vincent will have to pay if he sends n text messages this month? a) b) c) d) 10. 00 + 0. 04 + n 10. 00 + 0. 04 n 10. 00 n + 0. 04 (10. 00 + 0. 04)n
Tickets for a concert cost $12. 50 for students and $16. 50 for non–students. If (s) represents the number of students who bought tickets for the concert and (n) represents the number of non–students who bought tickets for the concert, which expression shows the total amount of money raised by ticket sales for this concert? a) 12. 50 s + 16. 50 n b) (16. 50 – 12. 50)n c) 29 ns d) 29(n + s)
START HERE!!!
Robert simplified the expression 6(x + 7) + (8 + 10) using the work shown below. Which property did he apply to develop step 2 of his work? 6(x + 7) + (8 + 10) STEP 1: 6(x + 7) + (18) STEP 2: 6 x + 42 + 18 STEP 3: 6 x + 60
A local market sells pumpkins for $3 each and watermelons for $5 each. Which expression gives the total cost for x pumpkins and y watermelons? a) 3 x + 5 y b) 5 x + 3 y c) 8 xy d) (5 + 3)(x + y)
The laundromat charges a one-time fee of $1. 50 to use the laundry machines. It costs $1. 25 per load. How much money do you need to spend to do laundry? a) 1. 50 + 1. 25 L b) 1. 50 + 1. 25 c) 1. 50 L + 1. 25 d) 1. 50 L + 1. 25 L
Simplify. 24 ÷ (6 ÷ 2) × 3 – 2
Select all expressions that are equivalent to 8 r + 16. a) 8(r + 2) b) 8 r(r + 2) c) 4(4 r + 12) d) 4(2 r + 4)
Select all expressions that are equivalent to 6(4 t + 8 e). a) 10 t + 14 e b) 24 t + 48 e c) 3(8 t + 16 e) d) 2(t + 4 e)
Simplify. 8 + 5 • 2 + 3(5 + 2)
Marcia’s cost, in dollars, to wash her can be calculated using the expression below, where m represents the number of minutes the car wash will run. 0. 25 m + 1. 50 What is the total cost for Marcia to wash her car for 20 minutes? a) $3. 50 b) $5. 00 c) $6. 50 d) $7. 00
Sigi’s taxi company charges $0. 60 per mile and adds an additional $4. 50 to cover the cost of bridge tolls. The expression below represents this relationship. How much will the taxi company charge for a 36 -mile drive? a) $5. 10 b) $26. 10 c) $27. 00 d) $41. 10
- Slides: 32