Adding 3-Digit Numbers with Regrouping

How many purple seahorses were there initially?

• 429

• 100

• 165

• 264

What color dot represents the 'tens' in the dot method?

• Blue

• Green

• Red

• Yellow

After adding the tens, what is the regrouping result?

• 12 tens as 120

• 12 tens as 1 hundred and 2 tens

• 10 tens as 1 hundred

• 12 tens as 2 hundreds

What is the total number of seahorses after addition?

• 429

• 264

• 165

• 100

What is the first step in the direct addition method?

• Add tens

• Add ones

• Add hundreds

• Write numbers in columns

What is the result when adding the ones in the direct addition method for seahorses?

• 5

• 4

• 12

• 9

How many big turtles are there?

• 264

• 428

• 293

• 135

What is the total number of turtles after addition?

• 429

• 428

• 293

• 135

What does the regrouping of tens result in during the turtle addition?

• 12 tens as 2 hundreds

• 10 tens as 1 hundred

• 12 tens as 1 hundred and 2 tens

• 12 tens as 120

What is the final reflection about the underwater world?

• It's empty

• It's scary

• It's beautiful

• It's boring