Exploring 2 Digit Addition with Regrouping

This video tutorial on Missiles Learning Channel focuses on teaching two-digit addition with regrouping using the expanded form strategy, also known as partial sums. The instructor demonstrates the process with the example of 48 plus 27, guiding viewers through setting up the problem, expanding numbers into tens and ones, and adding the columns separately to reach the final answer of 75.

What strategy is used for two-digit addition in the video?

• Cluster sums

• Partial sums

• Complete sums

• Aggregate sums

What is the first step in solving the addition problem presented?

• Drawing arrows

• Writing the problem

• Expanding numbers

• Adding numbers

What is the purpose of drawing placeholders?

• To subtract numbers

• To organize work

• To add numbers

• To multiply numbers

What does the number 48 expand to?

• 48 + 0

• 4 + 8

• 40 + 8

• 400 + 80

What is the sum of the ones column in the problem 48 + 27?

• 15

• 12

• 10

• 17

Which columns are added first in this method?

• Tens and ones

• Thousands and hundreds

• Hundreds and tens

• Ones and tens

What is the sum of 40 and 20?

• 80

• 50

• 70

• 60

How is the number 15 expanded for further addition?

• 1 + 5

• 10 + 5

• 15 + 0

• 5 + 10

What is the final sum of 70 and 5?

• 65

• 75

• 85

• 70

What is the final answer written under in the problem?

• The equal sign

• The placeholders

• The problem statement

• The operation circle