The video tutorial introduces the associative property of addition, explaining that numbers can be added in any order without changing the sum. It provides multiple examples using a worksheet to demonstrate how the property works, showing both equal and unequal sums. The video emphasizes the importance of choosing the order that makes calculations easier, such as making tens. The tutorial concludes with a recap of the key points and encourages viewers to practice using the associative property.

What is the associative property of addition?

• It allows numbers to be divided in any order.

• It allows numbers to be added in any order.

• It allows numbers to be subtracted in any order.

• It allows numbers to be multiplied in any order.

Which of the following is an example of the associative property?

• 5 / (2 / 3) = (5 / 2) / 3

• 5 * (2 * 3) = (5 * 2) * 3

• 5 - (2 - 3) = (5 - 2) - 3

• 5 + (2 + 3) = (5 + 2) + 3

In the first example, what is the sum of the numbers on both trains?

• 10

• 11

• 12

• 13

Why are the sums of the second example's trains not equal?

• The numbers are subtracted instead of added.

• The numbers are added in a different order.

• The numbers are not the same in both trains.

• The numbers are multiplied instead of added.

In the third example, what is the sum of the first train?

• 15

• 16

• 17

• 18

What is the sum of the second train in the third example?

• 15

• 16

• 17

• 18

In the final example, what is the sum of both trains?

• 11

• 10

• 12

• 9

What strategy is suggested for using the associative property effectively?

• Adding numbers in reverse order.

• Adding numbers that are the largest first.

• Adding numbers that make tens or other friendly numbers.

• Adding numbers in alphabetical order.

Which of the following is NOT a benefit of the associative property?

• It changes the sum of numbers.

• It allows flexibility in calculation.

• It helps in mental math.

• It simplifies addition.

What should you remember when using the associative property?

• Use the property to make addition harder.

• Combine numbers in a way that makes addition easier.

• Always add numbers in the order they appear.

• Avoid using the property for large numbers.