My Favorite Ways to Teach Multiplying Decimals

You ever start teaching multiplying decimals and then go…huh- how the hell do I teach this?

Need help teaching how to multiple decimals? Check out this blog post all about multiplying decimals.
Multiplying Decimals

Multiplying Decimals

There are a few ways to multiply decimals and don’t worry- I will walk you through some of my favorites.

Straight up multiplication

Let’s start with just basic multiplication. If I were to multiply 3.5 times .27- I am able to multiply that using standard operations. I am going to just multiply using the standard method. Then once I am done with that, I will count how many digits are behind the decimals. (2) Next, from the right, I count 2 places. Those 2 places and place the decimal.

Partial Products

I hate partial products. Most of my kids don’t use it because it’s slightly long. Here is how I teach it Break it up. (still using 3.5 x .27)

3 x .20= 0.60

.5 x .20 = .100

3 x .07 = .21

.5 x .07 = 0.035

Add them up: 0.60+.100+.21+0.035= 0.945

Area Model

My kiddos do tend to lean on this one as well. They love this one a lot! Okay so start with following the same way as lattice method above. Place the 35 (without the decimal) and then 27 on the right side. Make sure it is on the right side. Then multiply the counter parts like you just did in the partial products.

3 x .20= 0.60

.5 x .20 = .100

3 x .07 = .21

.5 x .07 = 0.035

Add them up: 0.60+.100+.21+0.035= 0.945

Math Notes

Multiplying decimals doesn’t have to be super stressful. One of my favorite tricks is using math notes. Sounds weird, right? However, when I use my math notes, I am able to actually support my students without being there. For example, we take the notes, and then when students go home they have the notes there to support them.

Guided Math

You can absolutely use guided math to teach this. I use guided math to teach all of my lessons. You can purchase that here!

Implementing Guided Math to Support your Students

You know it’s hard to make sure your students completely understand the math lesson. I love giving them skills to practice during the math block. Are you looking for ways to implement Guided Math into your classroom? Check out this FREE Guide to Implement Guided Math in 10 Days!