Understanding Basic Addition and Subtraction

The video tutorial introduces the concept of addition and subtraction using blocks and fact families. It explains the commutative property of addition and addresses common misconceptions about the order of subtraction. The tutorial provides examples of fact families, demonstrating how knowing one fact can help deduce others within the family. The lesson concludes with a summary of the key points learned about using fact families for addition and subtraction.

If you start with 9 blocks and remove 6, how many blocks are left?

• 0

• 3

• 6

• 9

Which of the following is true about addition?

• It can be done in any order

• It is the same as subtraction

• It always results in a smaller number

• It must be done in a specific order

What is a common misunderstanding about subtraction?

• It always results in a larger number

• It is the same as addition

• It can be done in any order

• It is not related to addition

If 5 + 4 equals 9, what is 9 minus 4?

• 9

• 4

• 0

• 5

Which of the following is a fact family for 6, 5, and 11?

• 5 + 6 = 11, 11 - 6 = 5

• All of the above

• 6 + 5 = 11, 11 - 6 = 5

• 6 + 5 = 11, 11 - 5 = 6

What is the result of 9 minus 6?

• 3

• 6

• 9

• 0

If you have 6 orange blocks and 3 green blocks, how many blocks do you have in total?

• 12

• 3

• 6

• 9

What is the result of 17 minus 9?

• 17

• 9

• 8

• 0

Which of the following is a correct fact family for 8, 9, and 17?

• None of the above

• Both A and B

• 8 + 9 = 17, 17 - 9 = 8

• 9 + 8 = 17, 17 - 8 = 9

What is the sum of 8 and 9?

• 17

• 16

• 8

• 9