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2 cards from this section. Quick, good the night before a test.
Is addition associative? Yes or No?
Think about how you can group numbers in addition.
Is subtraction associative? Yes or No?
Consider examples with numbers.
Is the operation of addition associative?
Think about changing the group of added numbers.
Which operation is NOT associative?
Remember how subtraction works with parentheses.
Given three numbers 4, 5, and 6, show both ways of grouping them in addition and prove it's associative.
Calculate both sums to prove your point.
Determine whether the following division is associative: (12 ÷ 3) ÷ 2 vs. 12 ÷ (3 ÷ 2). What is the result?
Calculate both and compare results.
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