MATH Flashcards
order of operations
6+3(3+4)-4(4)
11
order of operations
(3+6)x(8-5)
order of operations
9x(3+3)
order of operations
7+6x(12-7)
order of operations
(7^2+11) / 5
order of operations
5x(2x17)+3x(1x1)
order of operations
10+6-3+(5x6)
order of operations
5+6+(3x4)
order of operations
100+24/(4+4)x2
order of operations
2+2+4x(3+46+4-14)
addition
741+32
addition
6368+2951
addition
778473+217818
the sum of two positive numbers is a ________ number
positive
example : 3+4=7
the sum of two negative numbers is a ________ number
negative
example : -3+(-4)=-7
the sum of one positive number and one negative number can be ______ _ ________ __ _ _______ number
either a positive or negative
example : -3+4=1 or 4 -4+3=1
subtraction
-3-(-11)
subtraction
68+(-78)
subtraction is _______ ___ _______ ____ ____ ___ ______
taking one number away from the other
example : 8-4=4
when subtracting numbers are lined up _________
vertically
multiplication
124x209
multiplication
628x402
multiplication
70x32
multiplication
14.78x40
the product of two positive numbers is a ________ number
positive
example : 3x8=24
the product of two negative numbers is a ________ number
positive
example : (-3)x(-8)=24
the product of a positive and a negative number is a ________ number
negative
example : 8x(-3)=-24
when multiplying numbers are lined up __________
vertically
division
80/5840
division
6/463
division
15/165
division
7/35
the quotient of two positive numbers is a ________ number
positive
example : 9/3=3
the quotient of two negative numbers is a ________ number
positive
example : (-9)/(-3)=-3
____ ________ is used to divide larger numbers
long division
the quotient of a positive number and a negative number is a ________ number
negative
(-9)/3=-3
FINDING THE LCD
the LCD is the _________ number between two denominators that will divide evenly, this number is used for _______ and _________ fractions
smallest, adding, subtracting
what is the LCD of 1/5 and 3/4?
LCD is 20
what is the LCD 1/6 and 2/3?
LCD is 6
what is the LCD of 2/9 and 3/4?
LCD is 36
if the fractions have the same denominator add the numerators and the ___________ stays the same
denominator
example : 1/9+5/9=6/9 since both the numerator and the denominator are both divisible by 3 (reduced form is 2/3)
ADDING FRACTIONS
if the fractions have the same denominator add the _________ and the _________ stays the same
numerators, denominators
example : 1/9+5/9=6/9 since both the numerator and the denominator are both divisible by 3 (reduced form 2/3)
if fractions have a different denominator you have to find the ___
LCD
example : 2/3+3/4 (the LCD is 12 so rewrite the fraction with a denominator of 12…2/3x4/4=8/12 and 3/4x3/3=9/12 then add the equivalent fractions 8/12+9/12=17/12 and this gets reduced to a mixed number 1 5/12)
