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October 1 Spelling LIst
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Gravity
Terms in this set (15)
staple
a basic food source
ceremony
a series of actions taken during a special event
salmon
a type of fish that lays its eggs in fresh water but lives in the ocean; a food staple of the Pacific Northwest Indians
permanent
lasting for a long time or indefinitely
temporary
not permanent, lasting for only a limited time
Arctic
the area near the North Pole
distributive
a property of math in which one number is decomposed into 2 addends, and each addend is multiplied separately;
5 x 12 = (5 x 10) + (5 x 2)
associative
a property of math which states that numbers can be regrouped in addition or multiplication problems without changing the answers. 3 + (4 + 5) = (3 + 4) + 5.
commutative
a property of math which states that the order of addends in an addition problem, and the order of factors in a multiplication problem, does not matter.
5 x 6 = 6 x 5
properties
rules of math
expression
a math "phrase" of numbers and signs; (it different than an equation, which has an = sign);
numerical
relating to a number; a numerical expression could be
5 + 2
operation
the four operations of math are addition, subtraction, multiplication, and division
parentheses
( ) grouping symbols
decompose
when we decompose a number, we break it into smaller parts; we can decompose 42 into 20 + 22; we can decompose 531 into 500 + 30 + 1
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