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Math vocab ch.1

6 gr. math

compatible numbers ex. 70 x 80 numbers that are easy to compute
order of operation P.E.M.D.A.S P.E.M.D.A.S
expression ex. 18+2 x 11 a mathematical phrase that contains numbers and orperation symbles ex. + -
commutative property-addition ex. 7+4=4+7 switching the order of addens does not change sum
associative property-addition ex.(9+4)+7=9+(4+7) changing grouping of addends does not change sum
identity property-addition ex. 1+7+0=1+7 anything plus zero equals itself
commutative property-multiplacation ex. 9x7=7x9 changing order of factors does not change the product
associative property-multiplacation ex. (7x4)x3=7x(4x3) changing grouping of factors does not change sum
identity property-multiplacation ex. 7x1=7 anything times one equals itself
standard form ex. 1,749,123,001 the form that uses digits
Created by: Ziggy M