# Math Vocab Ch 6-8

### 16 terms by classshea

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Test Date is Jan 27 not Jan 25

### Divisible

a number is divisible by another number if the quotient is a whole number and the remainder is zero

### Common Factor

a number that is a factor of two or more numbers

### Greatest Common Factor

the greatest factor that two or more numbers have in common

### Composite Number

a whole number having more than two factors

### Prime Factorization

a number written as the product of all its prime factors

### Factor Tree

a diagram that shows the prime factors of a number

a diagram that shows the steps of repeatedly dividing by a prime number until the quotient is 1

### Associative Property of Addition

the property that states that when the grouping of addends is changed, the sum is the same

### Commutative Property of Addition

the property that states that when the order of two or more addends is changed, the sum is the same

### Least Common Multiple (LCM)

the smallest number, other than zero, that is a common multiple of two or more numbers

### Least Common Denominator (LCD)

the least common multiple of two or more denominators

### Benchmark

a familiar number used as a point of reference

### Round

to replace a number with one that is simpler and is approximately the same size as the original number

### Tenth

one of ten equal parts

### Hundredth

one of one hundred equal parts

### Estimate

to find a number that is close to an exact amount

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