Subtraction Strategies for 3rd Graders

The video tutorial for third graders covers math lesson 3.6, focusing on traditional subtraction. It begins with a warm-up exercise on estimation, followed by a section on using bar graphs to compare data and solve related problems. The lesson concludes with a practice session on traditional subtraction, where students learn to estimate and solve subtraction problems using expanded form and borrowing techniques.

What is the estimated sum closest to 200?

• 198 + 2

• 150 + 50

• 80 + 60

• 400 + 100

Which sum is less than 500?

• 400 + 300

• 200 + 100

• 150 + 350

• 403 + 112

How many more children liked Rock than Jazz?

• 15

• 55

• 25

• 35

How many fewer children liked Classical than Hip Hop?

• 5

• 15

• 25

• 35

How many more children liked Hip Hop than Classical and Jazz combined?

• 25

• 15

• 5

• 35

What is the result of 65 minus 47 using traditional subtraction?

• 18

• 20

• 17

• 19

Estimate the result of 182 minus 56.

• 146

• 116

• 136

• 126

What is the estimated result of 65 minus 47?

• 18

• 20

• 19

• 22

What is the estimated difference between 341 and 225?

• 126

• 146

• 116

• 136

What is the actual result of 341 minus 225?

• 116

• 126

• 116

• 106