Area 2- The Properties of Addition and Subtraction

1. Define the Commutative Property of Addition

Answer

2. Define the Associative Property of Addition

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3. Define the Identity Property of Addition

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4. Identify the property used.
16 + 0 = 16

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5. Identify the property used:
16 + 23 = 23 + 16

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6. Identify the property used:
(23 + 46) + 6 = 23 + (46 + 6)

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7. Tell what n equals:
(142 + 136) + n = 142 + (136 + 127)

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8. Katie says the first digit of her phone number is in the hundreds place of the following number:
23,456. What is that digit?

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9. $33.50 rounded to the nearest dollar is:

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10. What is the value of the digit 6 in 2,364,527?

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11. What place is the digit 6 in 2,364,527?