Properties and Sums of Addition

The video introduces the commutative property of addition, explaining that the order of addends does not affect the sum. It uses examples and visual aids like cubes to demonstrate this concept. The lesson includes practice problems to reinforce understanding and concludes with a recap of the key points.

What is the main topic of this lesson?

• The associative property of multiplication

• The commutative property of addition

• The distributive property of subtraction

• The identity property of division

Why can addends be added in any order?

• Because the sum changes

• Because the operation is subtraction

• Because the sum remains the same

• Because the addends change

In the example 2 + 5 = 7, what is the sum?

• 10

• 7

• 5

• 2

What happens to the sum when the order of addends is changed?

• The sum doubles

• The sum remains the same

• The sum decreases

• The sum becomes zero

How many yellow cubes are used to represent the addend five?

• Two

• Three

• Five

• Seven

What is the total number of cubes when 5 yellow cubes and 2 red cubes are combined?

• 7

• 8

• 6

• 5

If you start with 2 red cubes and add 5 yellow cubes, what is the sum?

• 5

• 6

• 7

• 8

What is the sum of 5 + 2?

• 9

• 8

• 6

• 7

What is the sum of 2 + 5?

• 9

• 6

• 7

• 8

What is the sum of 3 + 8?

• 9

• 10

• 11

• 12