Mastering 3-Digit Addition Techniques

The video tutorial covers the process of adding two-digit and three-digit numbers, focusing on the concept of regrouping. It begins with a review of two-digit addition, then introduces three-digit addition, highlighting the similarities and differences. The tutorial includes several practice problems, encouraging students to apply the techniques independently.

What is the first step when adding two-digit numbers?

• Start with the thousands place

• Start with the ones place

• Start with the tens place

• Start with the hundreds place

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

When adding 48 and 27, what do you do after adding the ones place?

• Write down the sum directly

• Multiply the tens

• Regroup the tens and add to the tens place

• Subtract the tens

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the main difference when adding three-digit numbers compared to two-digit numbers?

• You have an extra column for hundreds

• You start with the tens place

• You multiply the numbers

• You subtract instead of add

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CCSS.2.NBT.B.7

When adding 348 and 127, what is the sum of the hundreds place?

• 5

• 3

• 4

• 6

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CCSS.2.NBT.B.7

In the problem 275 + 253, what do you do after adding the ones place?

• Write down the sum directly

• Regroup the tens and add to the tens place

• Subtract the tens

• Multiply the tens

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CCSS.2.NBT.B.7

What is the sum of 375 and 129 in the hundreds place after regrouping?

• 7

• 6

• 5

• 4

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

When adding 544 and 92, what is the sum of the tens place after regrouping?

• 13

• 12

• 11

• 10

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the sum of 423 and 517?

• 960

• 950

• 940

• 930

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the sum of 190 and 128 in the tens place after regrouping?

• 12

• 11

• 10

• 13

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CCSS.2.NBT.B.7

What is the sum of 463 and 239 in the hundreds place after regrouping?

• 9

• 6

• 7

• 8

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2