Expressions for Dance Experience

The video tutorial covers lessons 18 and 19, focusing on writing and evaluating expressions using addition and subtraction. It includes solving story problems involving characters like Ella, Anna, Lisa, and Danica, and a table problem with Sue Ellen and Tara. The tutorial emphasizes defining variables, creating expressions, and substituting values to find solutions. The teacher guides students through each problem, encouraging them to think critically about the information provided and choose appropriate expressions to solve the problems.

If Ella wrote 8 more stories than Anna, and Anna wrote 10 stories, how many stories did Ella write?

• 16

• 18

• 22

• 20

What expression represents the number of stories Anna wrote if Ella wrote 'e' stories?

• e + 8

• e - 8

• 8 + e

• 8 - e

Lisa has been dancing for three more years than Danica. If Danica has been dancing for 6 years, how long has Lisa been dancing?

• 9 years

• 8 years

• 7 years

• 6 years

Which expression correctly represents Danica's dancing years if Lisa has been dancing for 'l' years?

• l + 3

• l - 3

• 3 + l

• 3 - l

If Sue Ellen is in her first year of dancing and Tara is in her fifth, how many years apart are they in terms of dance experience?

• 5 years

• 6 years

• 3 years

• 4 years

What expression would you use to find Tara's years of dancing if you know Sue Ellen's years?

• s + 4

• 4 + s

• s - 4

• 4 - s

If Tara has been dancing for 't' years, how would you express Sue Ellen's years of dancing?

• 4 - t

• 4 + t

• t + 4

• t - 4

In the context of the lessons, what does the variable 'e' represent?

• Number of stories Anna wrote

• Number of stories Ella wrote

• Number of years Danica danced

• Number of years Lisa danced

What is the correct expression to find the number of years Danica has been dancing if Lisa has been dancing for 'l' years?

• 3 + l

• 3 - l

• l + 3

• l - 3

If you know the number of years Tara has been dancing, how can you find Sue Ellen's years of dancing?

• Subtract 4 from Tara's years

• Add 4 to Tara's years

• Multiply Tara's years by 4

• Divide Tara's years by 4