Base-10 Multiplication - Polk County School District

Base-10 Multiplication - Polk County School District

Base-10 Multiplication Multiplying 2-digit by 1-digit numbers with base-10 blocks Carbs! Teachers have different nicknames for base10blocks

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 Carboloading 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

home

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