Math Chapter 2 Flashcards
A calculated guess that is close to the exact number.
Estimate
An estimated that is close to the actual answer.
Reasonable
Using the front digit to get an estimate
Ex: 3,425 would round to 3,000 & 652 would round to
Front-End-Estimation
To give an approximate value.
Ex: Round to the the nearest hundred
3,425 would round to 3,400
Rounding
Answer when one number is multiplied by another.
Ex: 67 x 42 = 2,814 { 2,814 is the _______.}
Product
Answer when one number is divided by another.
Ex: 129/3=43
{43 is the ________.}
Quotient
The number in the division problem that is divided into the dividend.
Ex: 129/3=43 { 3 is the ________.}
Dividend
The numbers that you multiply to get the product or multiple.
Ex: 3 x 4 = 12
2 x 6 = 12
1 x 12 =12
*1,2,3,4,6, and 12 are all ______ of 12.
Factor
The product or answer to a multiplication problem.
Ex: List the ________ of 12
12,24,36,48,60…… {do not include zero when listening.}
Multiple
The SMALLEST multiple two or more numbers have in common.
Least Common Multiple {L.C.M.}
A factor that two or more numbers have in common.
Ex: List factors of 4 and 6
4: 1 , 2 , 4
6: 1 , 2 , 3 , 6
*A common factor of 4 and 6 is 2 { Do not use 1 as a ______________.}
Common Factor
The LARGEST factor that two or more numbers have in common.
Ex: Find the ___ of 12 and 36
12: 1 , 2 , 3 , 4 , 6 , 12
36: 1 , 2 , 3 , 4 , 6 , 9 , 12 , 18 , 36
* ____ = 12
Greatest Common Factor {GCF}
A number that has ONLY TWO factors - 1 and itself.
Ex: 5 { only factors of 5 ~ 1 an 5 }
Prime Number
Neither Prime OR Composite!!!
1
A number that has THREE or more factors.
Ex: 16 ~ Factors of 16: 1 , 2 , 4 , 8 , 16
Composite Number
