Adding and Subtracting Signed Fractions and Mixed Numbers

The video tutorial covers the addition and subtraction of signed fractions and mixed numbers using number line models and mathematical rules. It explains how to handle double signs, find common denominators, and convert mixed numbers to improper fractions. The tutorial includes practice problems to reinforce the concepts taught.

What is the objective of today's lesson?

• To learn about geometry

• To solve quadratic equations

• To add and subtract signed fractions and mixed numbers

• To multiply and divide fractions

When adding -3/2 and -1/2 on a number line, which direction do you move?

• Up

• Right

• Down

• Left

What is the result of -3/2 + -1/2 using the rules for adding signed numbers?

• 1

• 0

• -1

• -2

When adding -1/4 and 3/4 on a number line, which direction do you move?

• Right

• Up

• Left

• Down

What is the result of -1/4 + 3/4 using the rules for adding signed numbers?

• 1/4

• 1/2

• 2/4

• 3/4

How do you rewrite 1 1/2 as an improper fraction?

• 3/2

• 5/2

• 4/2

• 2/2

What is the result of 1 1/2 + -2 1/2 using a number line?

• 0

• -1

• 1

• -2

What is the common denominator for 3/4 and 9/5?

• 20

• 25

• 15

• 10

What is the result of -3/4 + -9/5 after finding a common denominator?

• -1 11/20

• -2 11/20

• -1 9/20

• -2 9/20

What is the simplified form of -7/9 + 4/9?

• -1/9

• 1/9

• 3/9

• -3/9