Exploring Properties of Addition

Which two numbers are closest to each other: 1782, 2154, or 3496?

• 2154 and 3496

• All are equally close

• 1782 and 2154

• 1782 and 3496

Which number is closest to both 2000 and 2500?

• 3496

• 2154

• 1782

• None of the above

What is the identity property of addition?

• Adding one to any number does not change the number

• Adding zero to any number does not change the number

• The order of addends does not change the sum

• The grouping of addends does not change the sum

If you have 5 oranges and add 0 oranges, how many oranges do you have?

• None of the above

• 5

• 0

• 10

What does the commutative property of addition state?

• Adding zero to any number does not change the number

• The order of addends does not change the sum

• The grouping of addends does not change the sum

• Adding one to any number does not change the number

Which equation demonstrates the commutative property of addition?

• 4 - 0 = 4

• 4 + (5 + 1) = (4 + 5) + 1

• 4 + 5 = 5 + 4

• 4 + 0 = 4

What does the associative property of addition state?

• Adding zero to any number does not change the number

• The order of addends does not change the sum

• The grouping of addends does not change the sum

• Adding one to any number does not change the number

Which equation demonstrates the associative property of addition?

• 4 - 0 = 4

• 4 + 0 = 4

• 4 + 5 = 5 + 4

• 4 + (5 + 1) = (4 + 5) + 1

Which equation is not true?

• 2 + 4 + 5 = 5 + 2 + 4

• 3 + 2 + 1 = 1 + 3 + 2

• 3 + 4 + 1 = 2 + 4 + 1

• 7 + 6 - 6 = 1

Which equation is true?

• 2 + 4 + 5 = 5 + 2 + 4

• 7 + 6 = 7 - 6

• 15 + 3 = 18 + 1

• 4 + 0 = 5