Adding Decimal Fractions

Megan works at the post office, where she calculates package charges based on weight. She converts decimal weights to fractions to determine the correct price. For packages under half a pound, she charges $1, between half and one pound $3, and between one and two pounds $4. Megan uses common denominators to add fractions and determine the total weight. The video demonstrates this process with three customer scenarios, emphasizing the importance of finding a common denominator and converting decimals to fractions. Megan's morning ends with a summary of her method before she takes a lunch break.

What is the charge for a package that weighs 0.27 pounds and an envelope that weighs 0.1 pounds?

• $3

• $4

• $1

• $2

If a package weighs 0.5 pounds and another weighs 0.37 pounds, what is the total charge?

• $1

• $2

• $3

• $4

How does Megan convert 4/10 to a fraction with a denominator of 100?

• Divide by 5

• Divide by 2

• Multiply by 5

• Multiply by 10

What is the total weight of packages if one weighs 0.4 pounds, another 0.21 pounds, and an envelope 0.12 pounds?

• 0.83 pounds

• 0.63 pounds

• 0.73 pounds

• 0.53 pounds

What is the first step Megan takes when working with equivalent decimal fractions?

• Multiply the fractions

• Find a common denominator

• Subtract the fractions

• Add the numerators