This video tutorial explores various mental strategies for adding numbers. It begins with an introduction to the concept of using mental strategies to simplify addition problems. The video then covers specific strategies such as counting on, working with the number 10, adjusting numbers for easier addition, and using doubles. Each strategy is explained with examples to help viewers understand and apply these techniques to solve basic addition problems more efficiently.

What is the main focus of the video tutorial?

• Division shortcuts

• Mental strategies for addition

• Multiplication techniques

• Subtraction strategies

In the 'counting on' strategy, if you start with 7 and count on 5 more, what is the result?

• 10

• 11

• 13

• 12

Which strategy involves using the number 10 to simplify addition?

• Doubles

• Working with number 10

• Counting on

• Subtraction

If you know 8 + 2 equals 10, what is 8 + 3 using the number 10 strategy?

• 10

• 11

• 12

• 13

What adjustment is made to the number 9 in the strategy to make a round number?

• Divide by 2

• Add 1

• Subtract 1

• Multiply by 2

When adjusting 9 + 6 to make a round number, what is the new addition problem?

• 9 + 5

• 9 + 7

• 10 + 4

• 10 + 5

What is the result of doubling the number 4?

• 8

• 9

• 6

• 7

Which strategy involves picturing two groups of the same number?

• Counting on

• Working with number 10

• Subtraction

• Doubles

What is the benefit of using doubles in addition?

• It helps visualize groups

• It simplifies multiplication

• It makes subtraction easier

• It complicates the problem