Mastering Triple-Digit Addition Without Regrouping

In this video, Mr. J explains how to add three-digit numbers without regrouping. The tutorial includes four examples, starting with 426 + 371, using base 10 blocks for visualization. The process involves adding digits from the ones, tens, and hundreds places, emphasizing the value of each digit. The video progresses through examples 242 + 217, 659 + 220, and 324 + 212, with detailed explanations for each. The tutorial concludes with a summary of the addition process.

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

• Start with the hundreds place

• Start with the largest number

• Start with the ones place

• Start with the tens place

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CCSS.2.NBT.B.7

In Example 1, what is the sum of the ones place in 426 + 371?

• 5

• 7

• 6

• 8

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CCSS.4.NBT.A.1

In Example 1, what is the value of the digit 2 in the number 426?

• 200

• 20

• 2000

• 2

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CCSS.2.NBT.B.7

In Example 2, what is the sum of the tens place in 242 + 217?

• 60

• 40

• 50

• 30

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CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

In Example 2, what is the final sum of 242 + 217?

• 489

• 469

• 459

• 479

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CCSS.2.NBT.B.7

In Example 3, what is the sum of the ones place in 659 + 220?

• 9

• 10

• 8

• 7

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CCSS.2.NBT.B.7

In Example 3, what is the sum of the hundreds place in 659 + 220?

• 8

• 7

• 10

• 9

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CCSS.2.NBT.B.7

In Example 4, what is the sum of the tens place in 324 + 212?

• 40

• 30

• 50

• 20

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CCSS.4.NBT.A.1

In Example 4, what is the value of the digit 3 in the number 324?

• 3000

• 3

• 30

• 300

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CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

What is the final sum of 324 + 212?

• 556

• 536

• 526

• 546

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CCSS.3.NBT.A.2

CCSS.2.NBT.B.7