Prime Time 1.1 Finding Proper Factors Play the Factor Game once with a partner. Take turns making...
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Transcript of Prime Time 1.1 Finding Proper Factors Play the Factor Game once with a partner. Take turns making...
Prime Time 1.1 Finding Proper Factors
•Play the Factor Game once with a partner. Take turns making the first move. Look for moves that will give you more points than your opponent.•Record your “First Move” scores in a T-Chart• As you play, write down any strategies or patterns that you find.
Double Check
• How can you test to determine whether a number is a factor of another number?
• If you know one of the factors of a number, can you find another factor?
Question
• What is the term for a number that has many factors?
Composite!
• A composite number is a number that has more than two factors.
• What is the term for a number that has only two factors?
Prime!
• A prime number has only two factors!
• Can you think of examples of prime numbers?
• Is the number 1 prime?
• Is the number 9 prime?
Copy T-Charts and solve.
• Check your work with factor pairs!
• Circle all prime numbers and box composite numbers.
Homework
• On a sheet of notebook paper, draw and solve Factor Pair T-Charts for the following numbers:
• 10, 12, 15, 28, 30, 39, 42, 48, 60, 72, 80
• Remember: Include all factor pairs! Use your “Double Check” methods!
The Product Game!
• Think: Factor Pairs
• Remember:
Factor x Factor = Product