Basic Concepts Flashcards
a is
a is negative
a=0
a is positive
|3|=
|-3|=
3
The only number that is equal to its opposite is
0
a-b=-(a-b)
Sum
Addition +
16 is the sum of 12 and 4
16=12+4
Difference
Subtraction -
Product
Multiplication
Quotient
Division
The product and quotient of two positive numbers or two negative numbers are
POSITIVE
The product and quotient of a positive number and a negative number are
NEGATIVE
The product of an EVEN number of negative factors is
POSITIVE
The product of an ODD number of a negative factor is
NEGATIVE
The sum of two positive numbers is
POSITIVE
6+2=8
The sum of two negative numbers is negative
NEGATIVE
(-6)+(-2)=-8
The sum of a positive and a negative number
Find the difference of their absolute values and use the sign of the number with the largest absolute value
6+(-2)=4
The sum of ant number and its opposite is 0
a+(-a)=0
Subtracting a number is the same ad adding its opposite
a-b=a+(-b)
Dividing by a number is the same ad multiplying by its reciprocal
a/b=ax(1/b)
Consecutive integers
Two or more integers written in a sequence in each integer is 1 more than the preceding integer
22,23,24
Integers
….-1,0,1….
Prime number
A number that can only be multiplied (divisible) by one and itself and is greater than 2,3,5,7,11,13,17,19,23,29
**DOES NOT INCLUDE 1
Triangle 12,13__
5
Special right triangle
3,4,___
5
Right triangle 30-60-
90