Associative Property of Addition
Adding three numbers, pair them either way โ the sum is the same: (a + b) + c = a + (b + c)
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Adding three numbers, pair them either way โ the sum is the same: (a + b) + c = a + (b + c)
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Adding three numbers โ do you combine the first pair or the last pair first? Slide the ring back and forth: the three color groups never change and the total never changes. (a + b) + c = a + (b + c) โ that is the associative property of addition.
Three groups of colored blocks with a ring marking the pair that adds first. Tap Move ( ) and the ring slides from the first two groups to the last two: the color grouping never changes, and both equation lines end with exactly the same total.