Lesson 3: Regrouping in Addition Ms. Jamie Scordino 3 rd Grade Math.

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Presentation transcript:

Lesson 3: Regrouping in Addition Ms. Jamie Scordino 3 rd Grade Math

Base Ten Blocks Hundred Thousand Ten One

Base Ten Blocks 10 ones = 1 ten 10 tens = 1 hundred

Base Ten Blocks 10 hundreds = 1 thousand

This is the number 57 Tens Ones

This is the number 1,325 HundredsThousands Tens Ones

Base Ten Blocks Show Addition + = = 54

Base Ten Blocks Show Addition + = = 7 tens 12 ones We can’t have 12 ones in the ones place.

Base Ten Blocks Show Addition + = = 82 We can take 10 ones and make them into one ten.

In Math We Show This As: = 12, but we can’t have more than 9 in the ones place So, we regroup. We take 10 ones and make one ten and carry that ten to the tens place.

Base Ten Blocks Show Addition

Base Ten Blocks Show Addition

Practice Problem = 14 REGROUP carry the ten and put the four in the ones place = 12 REGROUP carry the ten and put the two in the tens place = 8, 8 goes in the hundreds place

Your Turn Your Turn /kids/double_digits.htm /kids/double_digits.htm Thank you for a great lesson!