Solving Real-World Decimal Multiplication Problems

The video tutorial explains how to calculate the cost of 14.6 gallons of gasoline priced at $2.70 per gallon. It begins by simplifying the price to 2.7 dollars per gallon and then demonstrates the multiplication of decimals by treating them as whole numbers initially. The tutorial provides a step-by-step guide to multiplying 14.6 by 2.7, including regrouping and carrying over numbers. Finally, it addresses the placement of the decimal point in the product, resulting in a total cost of $39.42 for the gasoline.

What is the initial problem presented in the video?

• Calculating the cost of 14.6 gallons of gasoline at $2.70 per gallon

• Finding the total distance traveled by a car

• Determining the fuel efficiency of a vehicle

• Calculating the cost of 20 gallons of gasoline at $3.00 per gallon

How is $2.70 simplified in the video?

• As 2.65 dollars

• As 2.75 dollars

• As 2.7 dollars

• As 3 dollars

What is the first step in multiplying decimals according to the video?

• Treat the numbers like whole numbers

• Add the numbers first

• Subtract the numbers

• Divide the numbers

What is the result of 7 times 6 in the multiplication process?

• 42

• 36

• 48

• 54

What do you do after multiplying 7 times 4 and adding 4?

• Regroup the 3

• Regroup the 4

• Regroup the 2

• Regroup the 5

What is the result of 7 times 146?

• 1,012

• 1,042

• 1,032

• 1,022

What is the next step after dealing with the 7 in the multiplication?

• Divide the results

• Subtract the results

• Add the results

• Deal with the 2, which is really a 20

What is the result of 2 times 6 in the multiplication process?

• 14

• 18

• 16

• 12

How many numbers should be to the right of the decimal in the final product?

• None

• Two

• One

• Three

What is the final cost of 14.6 gallons of gasoline at $2.70 per gallon?

• $39.42

• $40.00

• $37.80

• $38.50