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

### Ladder diagram

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

### Round

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