Mastering Multi-Digit Addition Techniques

This video tutorial teaches how to add large numbers using the standard algorithm. It explains the importance of lining up numbers by place value and demonstrates the process of carrying over when sums exceed ten. The video includes several practice problems and offers tips on checking your work. Viewers are encouraged to practice independently and are reminded to like and subscribe for more educational content.

What is an algorithm?

• A type of computer program

• A set of step-by-step instructions

• A mathematical equation

• A type of graph

In the standard algorithm, where do you start adding the numbers?

• From the leftmost digit

• From the middle digit

• From the rightmost digit

• From any digit

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the sum of 213 and 425 using the standard algorithm?

• 618

• 628

• 648

• 638

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Why is it important to line up numbers correctly in the standard algorithm?

• To make the addition look neat

• To ensure each place value is added correctly

• To make the numbers easier to read

• To avoid using a calculator

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What do you do when the sum of two digits is greater than ten?

• Carry over the extra digit to the next column

• Ignore the extra digit

• Write down the entire sum

• Subtract ten from the sum

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CCSS.1.NBT.C.4

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What is the sum of 284 and 136 using the standard algorithm?

• 430

• 410

• 420

• 440

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CCSS.2.NBT.B.7

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How can you check your addition result?

• By adding the numbers again

• By subtracting the sum from one of the addends

• By multiplying the numbers

• By dividing the sum by one of the addends

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CCSS.2.NBT.B.5

What is the sum of 327 and 145 using the standard algorithm?

• 482

• 462

• 472

• 492

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the sum of 42,516 and 85,321 using the standard algorithm?

• 127,837

• 127,847

• 127,857

• 127,867

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CCSS.4.NBT.B.4

What is the sum of 125,657 and 326,282?

• 451,929

• 451,949

• 451,959

• 451,939

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CCSS.4.NBT.B.4