Exploring 3-Digit Addition with Regrouping

What is the first step in solving three-digit addition problems with regrouping?

• Expand the numbers

• Align the numbers correctly

• Add the ones place

• Carry over the tens

What does the number 467 expand to?

• 400 + 60 + 7

• 400 + 70 + 6

• 4 + 60 + 700

• 40 + 6 + 7

How do you expand the number 169 for addition?

• 100 + 60 + 9

• 160 + 9

• 100 + 69

• 1 + 60 + 9

What is the result of adding 7 and 9 in the ones place?

• 14

• 15

• 16

• 17

What must be done when the sum in the ones place is a two-digit number?

• Start over

• Regroup by carrying over to the tens place

• Subtract 10

• Ignore the extra digit

After adding the tens and carrying over, what is the new sum?

• 110

• 140

• 130

• 120

What should you do if you encounter a three-digit number in the tens place during addition?

• Subtract 100

• Ignore the extra digit

• Regroup and carry over to the hundreds

• Restart the addition

What is the final step in the addition process?

• Check for mistakes

• Write the numbers in standard form

• None of the above

• Add the hundreds place

What is the correct standard form of the number after addition?

• 630

• 636

• 643

• 660

What encouragement does Sam offer to students learning three-digit addition?

• Addition is easy

• You'll get the hang of it the more we practice

• Practice makes perfect

• Take it one step at a time