This video tutorial covers addition strategies up to 20, including counting on, using doubles facts, and the commutative property. It explains how adding zero affects numbers and provides practice problems to reinforce these concepts. The video also includes word problems to apply these strategies and concludes with a preview of the next lesson on making a 10 to add.

Which property of addition states that changing the order of addends does not change the sum?

• Associative Property

• Distributive Property

• Identity Property

• Commutative Property

If 5 + 5 equals 10, what is 5 + 6?

• 11

• 13

• 10

• 12

What is the result of adding zero to any number?

• The number becomes zero.

• The number remains the same.

• The number decreases by one.

• The number increases by one.

What is the sum of 9 + 3 using the counting on strategy?

• 10

• 11

• 12

• 13

What is the sum of 7 + 0?

• 7.5

• 14

• 7

• 0

What is the result of 8 + 2 using the counting on method?

• 8

• 9

• 11

• 10

How many dog treats did Miss Pickles eat if she ate twice as many as Betty, who ate 4?

• 8

• 10

• 6

• 4

If 9 + 9 equals 18, what is 9 + 8?

• 19

• 17

• 16

• 18

If Bob ate 6 cookies and Dave ate 2 more than Bob, how many cookies did Dave eat?

• 6

• 7

• 8

• 9

Sarah made 7 bracelets last week and the same number this week. How many bracelets did she make in total?

• 12

• 10

• 14

• 7