Subtraction Concepts and Techniques

This video tutorial teaches how to subtract numbers within 20 using the making ten strategy and ten frames. It begins with an introduction to subtraction, explaining its non-commutative property. The video then introduces ten frames as a tool for visualizing numbers and addresses common misunderstandings about subtraction. Through examples, it demonstrates how to use ten frames to simplify subtraction, specifically focusing on problems like sixteen minus seven and thirteen minus five. The lesson concludes by summarizing the key points covered.

What is the first step in subtracting sixteen minus seven by making ten?

• Take away seven directly

• Add one to sixteen

• Subtract ten from sixteen

• First take away six

Which of the following is true about subtraction?

• Subtraction is not commutative

• Subtraction is distributive

• Subtraction is associative

• Subtraction is commutative

What is a ten frame used for?

• To write numbers

• To divide numbers

• To visualize numbers

• To multiply numbers

How many spaces does a ten frame have?

• Five

• Twenty

• Ten

• Fifteen

What is the result of sixteen minus seven using ten frames?

• Ten

• Seven

• Nine

• Eight

How is the number seven decomposed in the example of sixteen minus seven?

• Into seven and zero

• Into four and three

• Into six and one

• Into five and two

What is the first step in subtracting thirteen minus five using ten frames?

• Subtract ten from thirteen

• Add two to thirteen

• Decompose five into three and two

• Subtract five directly

What is the result of thirteen minus five using ten frames?

• Nine

• Seven

• Six

• Eight

How is the number five decomposed in the example of thirteen minus five?

• Into two and three

• Into five and zero

• Into three and two

• Into four and one

What is the purpose of using a ten frame in subtraction?

• To make subtraction more complex

• To memorize numbers

• To visualize and simplify subtraction

• To add numbers