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Chapter 1
Decimals and properties
5 cards·by toddreed
compatible numbers
numbers that are easy to calculate, often just using our brain
Identity Property of Addition
when adding "zero" to a number the number remains the same
Commutative Property
changing the order of addends will not change the sum
Associative Property of Addition
changing the grouping of the addends will not change the sum
Zero Property of Multiplication
when multiplying any number times "zero", the answer will always be zero