Subtracting Mixed Numbers Strategies

This video tutorial for fourth graders covers lesson 7.8 from the Go Math program, focusing on subtracting mixed numbers. It introduces three strategies: using models and number lines, renaming mixed numbers, and converting them to improper fractions. The video emphasizes the importance of choosing a strategy that works best for the student and encourages practice to reinforce learning.

What is the main focus of the video tutorial?

• Teaching addition of mixed numbers

• Reteaching lesson 7.8 from Go Math

• Explaining multiplication of fractions

• Introducing division of whole numbers

What is the first problem about in the video?

• Adding mixed numbers

• Multiplying fractions

• Subtracting mixed numbers using a model

• Dividing whole numbers

How is the number line used in the first problem?

• To add fractions

• To multiply fractions

• To subtract mixed numbers

• To divide fractions

What is the difference between 2 and 1/4 and 1 and 3/4 using the model?

• 4/4

• 3/4

• 2/4

• 1/4

What is the second strategy for subtracting mixed numbers?

• Using a calculator

• Drawing a model

• Renaming the first mixed number

• Using a number line

Why is renaming necessary in the second strategy?

• To make subtraction possible

• To make multiplication easier

• To simplify division

• To make addition possible

What is the third strategy for subtracting mixed numbers?

• Drawing a model

• Renaming both mixed numbers into improper fractions

• Using a number line

• Using a calculator

What is the result of 3 and 4/12 minus 1 and 6/12 using the third strategy?

• 1 and 2/12

• 2 and 2/12

• 1 and 6/12

• 2 and 6/12

What should students do after learning the strategies?

• Forget about them

• Practice them on page 431

• Ask a friend for help

• Use a calculator