Number Properties in Subtraction

How would you identify the commutative property in subtraction?

• a - b = a + b

• a - b = a * b

• a - b = b - a.

• a - b = b / a

If I re-grouped the following subtraction: 20-(15-3) will I get the same answer?

• no,

  20-(15-3)=8

  (20-15)-3=2

• yes

• maybe

• I don't know

Which property ensures that the result of a subtraction operation is also a number?

• Closure property of subtraction

• Distributive property of subtraction

• Commutative property of subtraction

• Associative property of subtraction

Identify the property that states a - b is not equal to b - a for all numbers a and b.

• Distributive property of subtraction

• Associative property of subtraction

• Non-commutative property of subtraction

• Commutative property of subtraction

Explain how the associative property works in subtraction.

• The associative property in subtraction only works with positive numbers.

• The associative property in subtraction involves multiplying the numbers being subtracted.

• The associative property in subtraction changes the order of numbers being subtracted and the results are not the same

• The associative property in subtraction allows us to regroup the numbers being subtracted WITHOUT changing the final result.

Apply the identity property of subtraction to the number 15.

• 15

• 5

• 20

• 10

Give an example where the closure property is violated in subtraction.

• Subtracting 2 from 8

• Subtracting 10 from 15

• Subtracting 5 from 3

• Subtracting 7 from 24

Recognize the property that allows you to change the grouping of numbers in a subtraction problem.

• Commutative Property of Subtraction

• Associative Property of Subtraction

• Distributive Property of Subtraction

• Identity Property of Subtraction

Calculate (8 - 3) - 2 using the properties of subtraction.

• 6

• 3

• 1

• 5

Why is it important to understand the properties of numbers in subtraction?

• It is important to understand the properties of numbers in subtraction to ensure correct results and build a strong foundation for further mathematical learning.

• It is not necessary to understand properties of numbers in subtraction

• Properties of numbers in subtraction only apply to advanced math

• Understanding properties of numbers in subtraction is irrelevant