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100
Substitute each value of the variable to find the solution of each equation. d + 9 = 35 d= 16, 22, 26, 36
d=26
100
A pan balance shows 7 + 5 = 12. If 4 units are removed from one side, what needs to be done to the other side to keep the pans balanced?
Take away 4 units from the other side.
100
Solve. y - 12 = 89
y = 101
100
Explain how you would solve the equation. 8y = 56
Divide both sides by 8
100
Write an inequality for the situation. The number of students the bus holds, s, is less than 40.
s < 40
200
u + $8.44 = $12.00 u = $2.56, $2.66, $3.46, $3.56
u = $3.56
200
Which property of equality was used? 5m + 4 = 19 5m + 4 - 4 = 19 - 4
Subtraction property of equality
200
Solve. 80 + r = 160
r = 80
200
Explain how you would solve the equation. u / 8 = 12
Multiply both sides by 8
200
Write an inequality for the situation. The least number of minutes, m, that a player must practice per day is 45 minutes.
m > 45 (less than or equal to) --
300
There are 27 pennies on one pan of a pan balance and 18 pennies on the other. To make the pans balance, Hillary thinks 5 pennies should be added to the higher pan, Sean thinks 8 pennies should be added, and Rachel thinks 9 pennies should be added. Use the equation of 27 = 18 + p to determine which is correct.
Rachel is correct.
300
Which of the equations is NOT equivalent to 8p = 12? 8p / 8 = 12 / 8 8p / 8 = 12 / 12 8p + 4 = 12 + 4 8p - 2 = 12 - 2
8p / 8 = 12 / 12
300
Solve. z - 313 = 176
z = 489
300
The cost to send a package using a mail service is $4.95. Write an expression to find the cost to mail p packages.
$4.95p
300
Write an inequality for the situation. The cost, c, is less than $45
c < 45
400
The students in Mrs. Johnson's class are running a race. Let g represent the number of girl runners and b represent the number of boy runners. Write an algebraic expression that describes the total number of students in the race.
g + b
400
Answer yes or no and explain why or why not. If 8n = 180, does 8n / 8 = 180 / 8 ?
Yes, because each side is divided by the same number.
400
Joy added 26 new contacts to her phone list. She had to delete 15 old contacts before she could add any more. Joy now has a total of 100 contacts. Let c represent how many contacts she had on her phone list before she updated it. Write an equation and then solve for c.
c + 26 - 15 = 100 c = 89 contacts
400
Kris left the library at 4:30 pm. She had been studying at the library for 45 minutes. It takes her 12 minutes to walk from the library from her home. At what time did Kris leave home to walk to the library?
45 + 12 = 57 minutes. 4:30- 57 minutes = 3:33 pm (3 minutes shy of a full hour/60 minutes)
400
Write an inequality for the following situation. Tim's age, t, is not 21 years old.
t =/= 21 (does not equal)
500
$19.25p = $115.50 p = $5.25, $6.00, $6.50, $7.00
$6.00
500
Which property was used? 7 + a = 10 7 - 7 + a = 10 - 7
Subtraction property of equality
500
Explain how to find n in the equation. n + 25 = 233
Subtract 25 from both sides. n = 208
500
Teddy is seven times older than Bella. If Teddy is 42 years old, how old is Bella? Write an equation to solve for Bella's age. Let a equal the age of Bella.
7a = 42. a = 6 Bella is 6 years old.
500
What are the 5 different symbols used for an inequality?
> < >or equal to