Doubles Facts and Addition Strategies

This video tutorial covers lesson 3.5, focusing on using doubles plus 1 and doubles minus 1 strategies to solve addition problems. The teacher explains how to apply these strategies with examples, such as 7 + 8 and 4 + 3, demonstrating how to adjust doubles facts to find the correct sum. The lesson emphasizes understanding and applying these strategies to enhance addition skills.

What is the main focus of Lesson 3.5?

• Division methods

• Doubles Plus 1 and Doubles Minus 1

• Multiplication tables

• Subtraction techniques

Which pages are assigned for homework in Lesson 3.5?

• Pages 50 and 51

• Pages 52 and 53

• Pages 53 and 54

• Pages 55 and 56

What is the purpose of using doubles facts in this lesson?

• To solve addition sentences

• To practice division

• To enhance subtraction skills

• To solve multiplication problems

In the example of 7 + 8, which doubles fact is used?

• 6 + 6

• 8 + 8

• 7 + 7

• 9 + 9

How do you adjust the doubles fact to solve 7 + 8?

• Subtract 2

• Add 2

• Add 1

• Subtract 1

What is the result of 7 + 8 using the doubles plus 1 method?

• 13

• 16

• 15

• 14

In the example of 4 + 3, which doubles fact is used?

• 3 + 3

• 4 + 4

• 5 + 5

• 6 + 6

How do you adjust the doubles fact to solve 4 + 3?

• Add 1

• Subtract 2

• Add 2

• Subtract 1

What is the result of 4 + 3 using the doubles minus 1 method?

• 9

• 6

• 7

• 8

What is the general strategy for using doubles facts?

• Use any addend to create a double

• Always add 2

• Only use the larger addend

• Subtract 2 from the double