Mastering 3-Digit Addition with Regrouping

The video tutorial covers the basics of addition using examples of ants and hens. It emphasizes the importance of precision and regrouping when dealing with double-digit numbers. The tutorial also explains how to check addition results using subtraction, highlighting the inverse relationship between these operations. The content is designed to help learners understand and apply addition with accuracy.

What is the result of adding 7 and 1?

• 10

• 6

• 8

• 9

Tags

CCSS.1.OA.A.1

What is the sum of 597 and 911?

• 1518

• 1408

• 1608

• 1508

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

How do mathematicians ensure precision in addition?

• By regrouping and checking their work

• By estimating the sum

• By using a calculator

• By guessing the nearest round number

Tags

CCSS.6.NS.B.3

What should you do if you find double digits in addition?

• Subtract them

• Divide them

• Regroup them

• Ignore the digits

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the sum of 9 and 5 in the context of adding hens?

• 13

• 14

• 15

• 12

Tags

CCSS.1.OA.A.1

When adding 985 and 189, what digit is carried over from the tens to the hundreds place?

• 1

• 2

• 3

• 0

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the final step in regrouping when adding 189 and 985?

• Write the total sum

• Regroup the tens

• Add the hundreds

• Carry over the tens

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the correct way to check an addition by using subtraction?

• Subtract the sum from one of the addends

• Multiply the sum by one of the addends

• Add the sum to one of the addends

• Divide the sum by one of the addends

Tags

CCSS.HSN.CN.A.2

What is the inverse operation used to check addition?

• Addition

• Multiplication

• Subtraction

• Division

Tags

CCSS.2.NBT.B.5