Simplify Expressions
Simplify
12a + a
13a
Solve
r - 3 = 8
r = 11
The answer to a multiplication problem is called a ......
product
Carol earns $8/h. How many hours must she work to earn $288?
36 hours
What is the capital of Florida?
Tallahassee
Simplify
7w - w
6w
Solve
g - 20 = 40
g = 60
The answer to a division problem is called a .........
quotient
Pamela can run the 300-m hurdles in 52.3 s. Elaine takes 2.8 s more than Pamela to make the same run. How long does it take Elaine to run the 300-m hurdles?
55.1 s
In which city did the Olympic games originate?
Athens, Greece
Simplify
5x + 8x
13x
Solve
c - 19 = 34
c = 53
A number's distance from zero on a number line is called .......
absolute value
Melissa measures her heart rate at 123 beats per minute. This is 55 beats per minute more than her resting heart rate r. Write and solve an equation to find Melissa's resting heart rate.
123 = r + 55
68 beats per minute
How many chambers are there in the human heart?
4 chambers
Simplify
2r - 5 + 6r
8r - 5
Solve
x - 4 = -18
x = -14
Name the property that allows you to change the addends and the factors in a problem and will equal the same sum or product.
Commutative Property
The average distance from the sun to Jupiter is 778 million km. This distance is 550 million km greater than the average distance from the sun to Mars. Write and solve an equation to find the average distance d that Mars is from the sun.
778= d + 550
228 million km
Who was the 16th president?
Abraham Lincoln
Simplify
-2x + x
-x
Solve.
-54 = x - 9
x = -45
To ......... an algebraic expression, you first replace each variable with a number. Then use PEMDAS to simplify.
Evaluate
The speed of sound through steel is 5,200 meters per second (m/s). This is 2,520m/s faster than the speed of sound through silver. Write and solve an equation to find the speed of sound s through silver.
5,200 = s + 2,520
Speed of sound through silver is 2,680 m/s
How many legs does a lobster have?
10 legs