x + 18 = 42
What is x = 24
The perimeter of a triangle is 36 inches. The base of the triangle is 20 inches. The other 2 sides have an equal length. Write and solve and equation that represents the length of the other 2 sides.
2s = 36 - 20
2s = 16 (divide both sides by 2)
s = 8
Write the integer of:
a. Depositing 600 dollars in your bank account
b. Withdrawing 150 dollars from your bank account
a. +600
b. -150
Katheryn gets paid $10 for babysitting. She spends $2 on a package of trading cards. Write and solve an equation to show how much money Katheryn has left
What is x + 2 = 10 x = 8
Don had 5 marbles. He lost two of them. Which equation below best represents how many marbles Don has left?
a) m = 5 + 2
b) 5 = m -2
c) m = 5 - 2
d) 5 = 2 + m
He had a total of 5 marbles, but lost 2.
m = 5 -2
m = 3
Correct answer is c.
What is an inequality?
A comparison of two numbers.
Shannon has $6 more than twice the amount of money that Dave has. If Dave has $5, write an equation and solve how much money Shannon has.
Dave has $5. Shannon has twice as much plus $6 more.
x = (2X5) + 6
x = 10 + 6
x = 16
The class must raise at least $50 to go on a field trip. They have collected $10. Write an equation to show how much the class still needs to collect to go on the trip. Solve the equation.
x = what the class still needs to collect
x = $50 - $10
x = $40
Jet hit 2 home runs in the game. He was walked 3 times in the game. Which equation below best represents how many time Jet got to bat during the game? Solve the equation.
a) b = 2 X 3
b) b = 3 - 2
c) b = 3 / 2
d) b = 2 + 3
d) b = 2 + 3
b = 5
The elevator has a weight limit 1,200 pounds. There are 3 people on the elevator who each weigh 200 pounds. Write an equation to represent how much more weight the elevator can hold without going over the limit.
w = the amount of remaining weight the elevator can hold
x = 1200 - 3(200)
x = 1200 - 600
x = 600 more pounds the elevator can hold
0.55s = 2.75
What is s = 5
Solve: 3y = 21
get the variable y by itself:
3y = 21 (opposite of multiplication is division)
3y / 3 = 21 / 3
y = 7
Write and Inequality comparing the integers:
-22 and -45
-22 > -45