GCF & LCM
What does GCF stand for?
Greatest Common Factor
What is an exponent?
An exponent is a number that shows how many times a base number is multiplied by itself.
What is the difference between an expression and an equation?
An expression does not have an equals sign and an equation does.
What is an equation?
A mathematical statement that two expressions are equal, containing an equals sign (=)
What does LCM stand for?
Least Common Multiple
Calculate 23
8 because 2 x 2 x 2 = 8
Write an expression for "5 more than a number x"
x + 5
** "Than" means you need to put the 5 more at the end.
Solve the equation: x+4=10
x = 6
Find the GCF of 12 and 16
4
What is the value of 52
25 because 5 x 5 = 25
Simplify the expression: 3x+4x
7x
Write an equation to represent "three times a number x is equal to 12"
3x=12
or 3(x)=12
Find the LCM of 3 and 5
15
Simplify 32 + 23
17 because 3 x 3 = 9 and 2 x 2 x 2 = 8 and
9 + 8 =17
Generate an equivalent expression for 2(x+3)
2x + 6
Use the distributive property, the 2 gets multiplied into each addend in the parenthesis
Find the solution: y - 7 = 21
y = 28
Find the GCF of 24, 36, and 60
12
If x=4, what is the value of x2 + 2x ?
24 because 42 = 16 and 2(4)= 8 and 16 + 8 = 24
If y=2, what is the value of the expression 4y+3
11 because 4(2)=8 and 8+3=11
Solve this equation:
5x−2=13
x = 3