How can I multiply a fraction by a whole number? Team B: Tyderah Bradley, Troy Erby, Cassandra Farzalo, Frank Giannamore, Kari Harbaugh, Holly Hartshorne

Let’s start with a review of multiplying fractions: To multiply a fraction by a fraction: Multiply numerator by numerator Multiply denominator by denominator Simplify if possible Example:

Now you try to multiply a fraction by a fraction: Write your answers to these 3 problems on your white board:

Let’s check your answers:

Now, let’s review how to change a whole number to a fraction: Any number divided by 1 equals that number. See: 5 1=5 So, you can put any whole number over 1 without changing it’s value. See:

So, how can I use what I know to multiply a fraction times a whole number? The problem:

Steps to multiplying a whole number by a fraction: 1.Change the whole number to a fraction 2.Multiply numerator by numerator and denominator by denominator 3. Simplify if possible

Hmmm…. But how can I simplify an improper fraction??? Just remember TI- BO! No, not that kind! TI-BO means top in- bottom out. So:

Let’s review the steps we just learned: Put whole number over 1 Multiply numerators and denominators Simplify if possible If my answer is still improper, do TI-BO!

Now you try it on your whiteboard:

Check your answers and your work:

So, how did you do? Give me a thumbs up if you got both problems right! Show me a thumbs to the side if you got one problem right! Point your thumb down to the ground if you still need some help.