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## Base-10 Multiplication

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**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**• 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 home