Lesson
How do we multiply 2, 3 or 4digit numbers by one number?
Now that you are getting more fluent with your multiplication facts, how can you use them to solve more complex multiplication problems? Take it one step at a time! Step 1: Start in the ones place (multiply 7 x 6 in the example). Step 2: Write the answer (42) but split the tens and ones. Carry the 4 (from the tens place) to the top of the middle column, and write the 2 in the ones place. Step 3: Multiply 3 x 6 (=18) and add back the 4 that you carried over from step 2. Write 22 and split the tens and ones again. Step 4: Multiply 6 x 6 and add in the 2 you carried over. Write the answer (38) on the product line. 
What other strategies can we use?
In Math, we have these cool symbols called "exponents" to help us write large numbers like 1,000,000 a little more efficiently. You have probably seen these tiny numbers on the corner of numbers before: The exponent is the tiny red number above the ten above. It tells you how many times to multiply the number ten. For example, 10 to the power of two (above) is the same as 10 x 10, which equals 100.
You will use these exponents to help you organize complex and long numbers in middle school, high school and beyond! 
Video LEssons
MultiDigit Multiplication Video Lesson

Strategy #2: Area Model and Partial Products

practice 
Worksheets

Games

