1. |
25 + 13 = 13 + 25
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order property of addition
grouping property of addition
zero property of addition
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2. |
36 + 0 = 36
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order property of addition
grouping property of addition
zero property of addition
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3. |
(69 + 92) + 41 = 69 + (92 + 41)
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order property of addition
grouping property of addition
zero property of addition
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4. |
72 + (31 + 20) = (72 + 31) + 20
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order property of addition
grouping property of addition
zero property of addition
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