Math Exam 1st Flashcards
Similar shapes have to have…
Same basic shape
Same angle measures
Proportional side lengths
3/5 + -5/10
-30/25
Additive inverse of a number
A+-A=0
Numerator
Top number of the fraction
Associative property of addition
(A+B)+C= A+(b+c)
Associative property of multiplication
(Axb)xc=ax(bxc)
Commutative property of addition
A+b=b+a
Comm of mult
Axb=bxa
Difference
The result of dividing one number by another
Distributive property
Ax(b+c)=axb +axc
Equation
A mathematical statement that two expressions are equal
Equivalent
Equal
Expression
The part of a number sentence that combines numbers and operations but doesn’t have an equal sign
Factor
A whole number that divides ant other whole number equally
Greatest common factor
The largest factor two numbers have in common
Identity property of addition
A sum of any number and zero is the original number
A+0=a
Identity property of multiplication
A*1=A
Integer
A whole number, it’s opposite and zero
Inverse operation
Operations that undo each other such as addition and subtraction
Least common multiple
The smallest common multiple of two numbers
Multiplicative inverse of a number
1_=1
Product
Multiplying two numbers
Proportions
Two ratios that are equal
Unit rate
Cost per unit of measure
9/5 +3 1/4 - 5/8
Do some problems like this one
0.12 as a fraction
3/25
1.8 as a fraction
1 4/5
11/50 as a percent
22%
19/25 as a percent
76%
.42 as a percent
42%
76% as a fraction in lowest terms
19/25
What happens when you multiply by a negetive number?
Flip the sign
