Adding and Subtracting Mixed Numbers

This lesson focuses on modeling addition and subtraction of mixed numbers, emphasizing the use of fraction strips and number lines. It covers when to rename fractions, solving complex problems, and applying these skills to real-world scenarios. The lesson concludes with a review of key concepts.

When adding mixed numbers, is it always necessary to rename the fractional sum?

• Yes, always

• No, not if the numerator is less than the denominator

• Only if the fractions are improper

• Only if the whole numbers are different

What tool can be used to find the sum or difference of fractions more easily?

• Multiplication tables

• Fraction strips

• Algebraic equations

• Decimal charts

If you have 1 and 2/5 plus 2 and 4/5, what is the sum?

• 4 and 6/5

• 3 and 1/5

• 4 and 1/5

• 3 and 6/5

What is the result of 2 and 1/4 minus 1 and 3/4?

• 2/4

• 2 and 1/2

• 1 and 1/2

• 1/2

Kit spent 1 and a half weeks with her grandma and one more week with her aunt. How many weeks did she spend in total?

• 2 and a half weeks

• 3 weeks

• 3 and a half weeks

• 4 weeks

If Kit spent 4 weeks visiting family and 3 and a half weeks in swimming lessons, how much more time did she spend visiting family?

• 1 and a half weeks

• 1 week

• 1/2 week

• 2 weeks

Hannah used 1 and 5/8 gallons of paint for the ceiling and 4 and 3/8 gallons for the walls. How much paint did she use in total?

• 5 gallons

• 6 and 1/8 gallons

• 6 gallons

• 5 and 7/8 gallons

A furlong is 660 feet. How many furlongs are in one mile?

• 6

• 9

• 7

• 8

A recipe calls for 1 and 2/3 cups of brown sugar for granola bars and 1 and 3/4 cups for the topping. Dara has 3 and 1/4 cups of brown sugar. Does she have enough?

• No, she needs exactly 3 and 1/4 cups

• Yes, with some left over

• No, she needs more

• Yes, she has enough

Megan is knitting a scarf. She has knitted 2 and 1/12 feet and needs to knit another 2 and 11/12 feet. What is the total length of the scarf?

• 5 feet

• 5 and 1/12 feet

• 4 feet

• 4 and 11/12 feet