base-10 multiplication
DESCRIPTION
Base-10 Multiplication. Multiplying 2-digit by 1-digit numbers with base-10 blocks. Carbs!. Teachers have different nicknames for base-10blocks This presentation uses waffles, fries and tater tots Waffles=100; Fries=10; Tater tots=1. Ready, Set, Go!!. Let's Begin with 23x3. Representing. - PowerPoint PPT PresentationTRANSCRIPT
Base-10 MultiplicationMultiplying 2-digit by 1-digit numbers
with base-10 blocks
Carbs!
Teachers have different nicknames for base-10blocks
This presentation uses waffles, fries and tater tots
Waffles=100; Fries=10; Tater tots=1
Ready, Set, Go!!Let's Begin with 23x3
Representing
First, let's represent 23 with our base-10 notation
That's two tens and 3 ones
Or 2 fries and 3 tots
Here we go...
Multiplying 23 x 3
Draw 3 sets each with 2 fries and 3 tots
French Fries
There are 2, 4, 6 fries
That's 6 tens or ...
60
Tater Tots
There are 3, 6, 9 tater tots
That's 9 ones or...
9
Add it up
So we have 6 tens and 9 ones
AKA
60 + 9
AKA 69
So 23 x 3 = 69
But wait!!What if you have to regroup?
Chill...Let's try 125 x 5
Carbo-loading
That's one waffle,Two fries,
& 5 tater tots Written 5 times
Waffles
So that's 5 waffles...
Or 5 hundreds
Or 500
Fries
That's 10 fries
Or 10 tens
Or 100
So ten fries makes another waffle
Tater Tots
That's 25 ones
Or 25
So 25 tater tots can be traded for 2 fries and 5 tots
Wrap it up...
So 125 x 5 = 625
This is what it might look like on a sheet notebook paper-->
I hope this helps...Here's a picture of your mother driving
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