Decimal Word Problems Explained

The video tutorial covers solving decimal word problems using a four-step process: understanding the question, planning, solving, and verifying the solution. Three examples are provided: calculating total cost of items using addition, determining the cost of peanut butter using multiplication, and finding the unit cost of salad using division. The tutorial emphasizes aligning decimals in addition, recognizing multiplication cues, and handling division with decimals. The session concludes with a Q&A invitation.

What is the first step in solving a decimal word problem according to the four-step process?

• Check the solution

• Solve the problem

• Understand what is being asked

• Make a plan

Ryan bought a liter of milk for $2.37, a loaf of bread for $1.35, and ketchup for $1.97. What operation should be used to find the total cost?

• Subtraction

• Addition

• Division

• Multiplication

What is the total amount Ryan spent on his shopping?

• $5.50

• $5.69

• $6.00

• $4.50

If peanut butter costs $3.89 at Ray's market and 1.3 times as much at Jim's supermarket, what is the cost at Jim's?

• $5.10

• $5.05

• $5.06

• $4.50

When multiplying decimals, how many decimal places should be in the final answer if the factors have 2 and 1 decimal places respectively?

• 2

• 4

• 1

• 3

Mary bought 2.67 pounds of salad for $14.31. What operation should be used to find the cost per pound?

• Addition

• Division

• Multiplication

• Subtraction

What is the cost per pound of salad that Mary bought?

• $5.40

• $5.30

• $5.36

• $5.35

When dividing decimals, what should be done to the divisor if it has decimal places?

• Leave it as it is

• Move the decimal point to the right to make it a whole number

• Move the decimal point to the left

• Ignore the decimal point

Why is it important to check the solution after solving a decimal word problem?

• To verify the solution makes sense in the context of the problem

• To practice more problems

• To ensure the answer is in the correct format

• To find any possible errors in the question

What should you do if the number to the right of the second decimal place is 5 or greater when rounding?

• Leave it as it is

• Ignore the number

• Round up

• Round down