Pre-Algebra: Expressions
An expression is a combination of numbers, operators, grouping symbols (such as brackets and parentheses) and/or free variables and bound variables arranged in a meaningful way which can be evaluated. Bound variables are assigned values within the expression (they are for internal use) while free variables can take on values from outside the expression.
Worksheets
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Pre-Algebra: Expressions Videos
Combining Like Terms
Video Clip Length: 1 minute 13 seconds
Video Clip Views: 11412
This tutorial shows how to combine like terms in given polynomial, the variables, and the constants. You will learn to combine the coefficients of the same variable as well as pay attention to the signs of coefficients, for there are different rules for different signs and same signs.
algebraic fractions, constants, equations, expressions, number sense, numbers, polynomials, variables
Solving Multi Step Equations 2
Video Clip Length: 2 minutes 12 seconds
Video Clip Views: 10299
This tutorial will show you how to solve linear equations with multiple steps. In order to solve for y, you need to combine like terms. First, reduce by adding constants on the left hand side together, then next, you should combine like terms, y's, and then get y by itself with undoing mutliplication using division.
equations, expressions
Simplifying Expressions With Exponents Without Grouping
Video Clip Length: 3 minutes 12 seconds
Video Clip Views: 8762
This tutorial will show you how to multiply constants and the variables. You will learn how to show the multiplication of variables as powers.
constants, exponents, expressions, multiplying variables
Pre-Algebra: Expressions Word Problems
Mr. Jenkins can dig a ditch
Mr. Jenkins can dig a ditch in one hour less then his son. Working together, they can do the job in 2\3 hour. How long does it take for ...
A marketing manager travels
A marketing manager travels 1080 miles in a corporate jet and then an additional 240 miles by car. If the car ride takes one hour longer than the jet ride takes, and if the rate of the jet is 6 times the rate of the ...
Erica hiked up a mountain trial
Erica hiked up a mountain trial at 3km/h and returned at 4k/h. The entire trip took five hours 10 min including the half an hour she spent at the ...
Pre-Algebra: Expressions Practice Questions
hq - mk = ks + nt solve for k
-4x+9x=10
the graph of the function y =log
5x appears in which quadrants?
Simplify: 19g-4h+4-20(g-1)
a + (4/5) a + b - (10/4)b
nine hundred seven less than twice x
√
75
2 + (4 -2)
2
(-3) + (-4) - (-5)
x/2-x-1/3=5
2y/y+4=3/y-1
Simplify the expression:
(3x
2y)(-xy)
2
What is 6x + 3x?
2(a
2-b
2)(ab)+a
4 b
4
______________
a
4-b
4
6x-3(1+6x)
Three more than eight times a number is equal to 19
1/4=3-(2x-1)/(x+2)
(3/2)x = 125
3√
x - 4 = 2
4-(x)/(x-2)=(-2)/(x-2)
√
x+20-x=0
(r
3s
-1 / r
2s
6)
-1
12 more than a number t
What is the value of the rational expression below when x is equal to 3?
x+1
x-4
coefficients of 4e
+7e
+5
2√
18
1/9+1/x=4/9
Seven times the product of negative five and a number.
7+[(6-2)*2*2]
3n-8n+2n
3(x+3)-7 simplify
1570536900*x
-2 = 100
4x-2x
2/5x-7x
2
47 more than b
2x+5=x-3
2(x-3)+5x
4-(-5+x)+6x
-2x-3=-7
(-2mat+2k)+(3k+ak)
What are careers that use radical equations?
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