Adding Whole Numbers with Regrouping

Adding Whole Numbers with Regrouping

Multiple Select

Do you know how to regroup when adding?

• Yes

• No

• I don't know what regrouping is so... no!

Watch YouTube video to 2 minutes 36 seconds

https://youtu.be/mAvuom42NyY

Multiple Choice

How do we line up our numbers when we add?

• However we want!

• Neatly by their place value

• Starting with the digits on the left

Multiple Choice

Solve: 123 + 45 =

• 573

• 168

• 186

Multiple Choice

Solve: 346 + 51 =

• 378

• 397

• 896

Watch Youtube Video up to 4 minutes 55 seconds

Multiple Choice

When do we need to regroup (or carry the one)?

• When the digits add up to a two-digit number

• Whenever we want!

• I don't know. I should rewatch the video.

Multiple Choice

Solve: 456 + 78 =

• 424

• 534

• 500

Multiple Choice

Solve: 539 + 64 =

• 613

• 593

• 603

Watch the rest of the Youtube Video

Multiple Choice

Why do we sometimes have to "carry the 2" instead?

• I don't know. I should rewatch the video.

• Because the digits add up to 24 or 21 or some other number in the 20s

• We never do that. Only carry the 1.

Multiple Choice

Solve:

165 + 324 + 78=

• 567

• 667

• 467

Multiple Select

How do you feel about your level of understanding of addition now?

• 1 - Novice

• 2 - Developing/Apprentice

• 3 - Master

• 4 - Expert