Word Problems Involving Division and Comparisons

This video tutorial teaches how to solve word problems involving multiplicative comparisons using division. It covers representing unknown numbers with letters and symbols, using bar models for visualization, and solving specific word problems like the giraffe and kangaroo height comparison and the cookie distribution problem. The lesson emphasizes understanding when to use division in multiplicative comparison scenarios.

What is the main mathematical operation used to solve word problems involving comparisons?

• Division

• Multiplication

• Subtraction

• Addition

How can unknown numbers be represented in equations?

• Using shapes only

• Using colors

• Using letters and symbols

• Using numbers

In the word problem '30 is five times as many as what number?', what is the unknown number?

• 25

• 5

• 6

• 30

What visual tool is used to help solve cost comparison problems?

• Bar models

• Pie charts

• Line graphs

• Tables

If a red hat costs $18 and a blue hat costs $6, how many times more expensive is the red hat?

• 2 times

• 3 times

• 4 times

• 5 times

How tall is the kangaroo if the giraffe is 15 feet tall and three times as tall as the kangaroo?

• 15 feet

• 10 feet

• 5 feet

• 3 feet

What is the first step in solving the giraffe and kangaroo height problem?

• Subtract the kangaroo's height from the giraffe's height

• Multiply the giraffe's height by three

• Divide the giraffe's height by three

• Add the giraffe's height to the kangaroo's height

Greg has 30 cookies, which is five times as many as Tim. How many cookies does Tim have?

• 15

• 5

• 6

• 10

What operation is used to find out how many cookies Tim has?

• Addition

• Subtraction

• Multiplication

• Division

If Greg has five times as many cookies as Tim, and Tim has 6 cookies, how many cookies does Greg have?

• 36

• 30

• 24

• 42