click below
click below
Normal Size Small Size show me how
Quehl math voc.ch.2
Quehl math vocabulary chapter 2
Term | Definition |
---|---|
addends | numbers added together to give a sum |
sum | the answer when adding two or more addends |
commutative (order) property of addition | numbers can be added in any order and the sum will be the same |
associative (grouping) property of addition | the grouping of addends can be changed and the sum will be the same |
identity (zero) property of addition | the sum of any number and zero is that same number |
fact family | a group of related facts using the same numbers |
difference | the answer when subtracting two or more numbers |
estimate | to give an approximate answer or number |
rounding | replacing a number with a number that tells about how much or how many to the nearest ten, hundred, thousand, and so on |
front-end estimating | a way to estimate a sum or difference by using the first digit of each number |
compatible numbers | numbers that are easy to add, subtract, multiply or divide mentally |
overestimate | an estimate that is greater than the exact number |
underestimate | an estimate that is less than the exact number |