Understanding Addition Methods

This video tutorial introduces the partial sums addition method, aimed at third-grade students but useful for anyone interested in learning this math strategy. The video explains both the slow and fast methods of partial sums addition, starting with a detailed breakdown of the slow method, which involves writing out each step to show the thought process. Once students are comfortable, they can transition to the fast method, which involves mental calculations. The tutorial also covers applying partial sums to three-digit numbers and encourages viewers to practice the method with homework or other addition problems.

What is the main topic of the video?

• Subtraction strategies

• Division methods

• Partial sums addition

• Multiplication techniques

Who is the primary audience for this video?

• High school students

• Adults learning math

• Third grade students

• College students

In the slow method, what is the first step when adding two-digit numbers?

• Subtract the smaller number

• Add the ones place

• Add the tens place

• Add both places together

What is the sum of 40 and 20 in the slow method example?

• 60

• 70

• 80

• 50

In the slow method, what is the sum of the ones place in the example?

• 4

• 5

• 7

• 6

What is the final answer for the slow method example of 43 + 22?

• 55

• 60

• 65

• 70

In the fast method, what is the sum of the tens place for 65 + 37?

• 110

• 80

• 100

• 90

What is the sum of the ones place for 65 + 37 in the fast method?

• 10

• 11

• 12

• 13

What is the final answer for the fast method example of 65 + 37?

• 102

• 92

• 102

• 112

In the three-digit example, what is the sum of 200 and 700?

• 900

• 1000

• 800

• 1100