Multiplying by 11

Today we will practice using the splitting strategy to multiply by 11.

Let's Imagine

Today we will imagine that we have a chicken farmer who keeps one egg from each carton to feed his family.

• So even though 12 eggs will fill a carton, there will now only be 11 eggs since the farmer needs to feed his family.

Stack of six

There are six cartons.

• There are 11 eggs in each carton.

• So, we have six groups of 11.

• How many eggs are there?

Let's use splitting

Now I'll show another way.

• I will split each carton so that there are 10 eggs in one part and 1 egg in the other part.

​Let's Stack three cartons!

​Splitting with a carton of 3 eggs

If you don't remember that 3 times 11 equals 33.

• You can figure it out by splitting.

• I will split the carton into 10 and 1 because it's easy to multiply by 10.

We will work on worspace pages 9 and 10.

​

​Time to Wrap it up!!!