Comparison Models in Problem Solving

This video tutorial covers comparison problems using models, focusing on addition, subtraction, and multiplication bar models. It explains how to visualize and solve these problems, including multi-step and direction-based problems. The tutorial also includes practical examples, such as calculating weights and distances, and ends with a problem about determining the number of posts needed for a fenced area.

What is the primary purpose of using models in comparison problems?

• To visualize the amounts being compared

• To make the problem more complex

• To avoid using mathematical operations

• To confuse the solver

Which clue words suggest using addition or subtraction models?

• How many parts

• How much total

• How many more or fewer

• How many times

When should you use a multiplication model in comparison problems?

• When comparing total amounts

• When finding how many times as much

• When finding the sum

• When comparing equal parts

In the example with Dave and Tim, what does 'n' represent?

• The difference in weight

• The total weight

• Tim's weight

• Dave's weight

What is the result of the equation 4 times n equals 80 in the Dave and Tim example?

• n equals 25

• n equals 15

• n equals 30

• n equals 20

In the addition model, if 15 is 10 more than n, what is n?

• 5

• 10

• 20

• 15

How much more does Dingo weigh than Lola?

• 18 pounds

• 22 pounds

• 28 pounds

• 30 pounds

What is Tala's birth weight if she weighs 63 pounds now, which is nine times more?

• 6 pounds

• 8 pounds

• 5 pounds

• 7 pounds

In the Tala and Sophia example, how many boxes represent Tala's weight?

• 10 boxes

• 9 boxes

• 7 boxes

• 5 boxes

How many more dogs found homes than cats in the animal shelter problem?

• 20 more dogs

• 35 more dogs

• 25 more dogs

• 30 more dogs