Presentation on theme: "Prime Time 1.1 Finding Proper Factors"— Presentation transcript:
1 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-ChartAs you play, write down any strategies or patterns that you find.
2 Double CheckHow 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?
3 QuestionWhat is the term for a number that has many factors?
4 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?
5 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?
6 Copy T-Charts and solve. Check your work with factor pairs!Circle all prime numbers and box composite numbers.
7 HomeworkOn 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, 80Remember: Include all factor pairs! Use your “Double Check” methods!
8 The Product Game! Factor x Factor = Product Think: Factor Pairs Remember:Factor x Factor = Product