Breaking Apart Numbers and Addition Strategies

The video tutorial teaches how to break apart numbers to simplify addition. It explains the importance of demonstrating addition strategies to others and compares different methods, such as using place value blocks, drawings, and number lines. Two example problems involving vegetables and tomatoes illustrate these techniques, showing how breaking apart numbers can make addition easier and more intuitive.

Why is it important to explain our addition strategies?

• To avoid using numbers

• To make math more difficult

• To prove our answers are correct

• To confuse other students

Which of the following is NOT a method to break apart numbers?

• Using place value

• Using drawings

• Using subtraction

• Using words

How can the number 23 be broken apart using place value?

• 10 + 13

• 5 + 18

• 15 + 8

• 20 + 3

In the vegetable problem, what was the first step the math monkey took?

• Broke 23 into 1 and 22

• Moved 1 from 23 to 59

• Subtracted 1 from 23

• Added 10 to 59

What was the final total of vegetables used in the salsa?

• 90

• 68

• 82

• 75

How did the second math monkey solve the vegetable problem?

• Using a graph

• Using a ruler

• Using a calculator

• Using a number line

In the tomato problem, how did the first monkey simplify the addition?

• By adding 10 to each number

• By multiplying the numbers

• By breaking 47 into 45 and 2

• By subtracting 5 from 28

What is an open number line?

• A number line with every number marked

• A number line with no numbers marked

• A number line with only tens marked

• A number line with random numbers marked

What was the total number of tomatoes calculated by the monkeys?

• 90

• 68

• 75

• 82

What was the main focus of this lesson?

• Subtraction techniques

• Multiplication strategies

• Breaking apart numbers for addition

• Division methods