# Unit 3 lesson 18 write a word problem that represents a comparison

In the past, most students are able to determine that Summer has 5 times as many apples. Scroll down the page for more examples and solutions. I express that we use a unit fraction to do so because we are fracturing, or equally dividing, something. After several similar examples, I then ask students to write situation equations to match situations I tell them.

How much taller is the tree than Suzie? For this assignment, I do not require students to write the situation equation comparing the small number in terms of the large number as a fraction mutlplied with a whole number.

I have students orally practice using the two different equations to compare the quantities. Juan picked 4 times as many as Darlene.

I then tell them they we can also use multiplication to compare the two quantities. I ask them to turn and talk with their learning partner and discuss how many times as many apples Summer has than her brother.

Write an equation and solve for the variable 1. How much bigger than Scruffy is Tuffy? How old is George? In the past my students have needed guidance for this. I can write an equation for a situation involving multiplicative comparison. I think this is very important for students to make connections and see relationships, especially with the tape diagram model. K is five times as old as her son. How tall is Suzie? Scruffy is 12 inches high at the shoulder and Tuffy is 24 inches high at the shoulders.

Statement, Statement, Question 3. After I sense that students are comfortable with writing situation equations, we put it all together to solve, model, and write an equation to match. The tree is 9 times as tall as Suzie. Write a comparison statement to match the multiplication equation.

George is g years old. Students draw a tape diagram in their math notebooks to model as well. How many books did George read? At this point in the year, students have not had the lessons necessary to do this, thus I do not have them write that equation.

Multiplicative Comparison using writing How to use models, illustrations and writing to solve multiplicative comparison questions? I write on the board, Summer collected 15 apples while her little brother collected 3. From past experience, this is difficult for students when expressing the smaller amount in terms to the larger amount.

I give various multiplicative comparison situations for students to model in their notebooks with tape diagrams, allowing students to use Math practice standard 4. Multiplicative comparison questions are usually written in word problems that have this format: Other students might say they know that 15 divided by 3 is 5.

The tree in her yard is 36 feet tall. I ask students to raise their hands for answers and then have others give a thumbs up if they agree of a thumbs down if they disagree or have a different answer. We use the two statements to determine the number sentence or equation.

George read 7 times as many books. Some students say they know it because 5 x 3 is As students say the sentences, I write a matching equation on the board. It is important to express the reciprocal vocabulary in this lesson in order for students to make connections between multiplication and division and whole numbers and fractions.

An equation is just like a number sentence but it includes letters. If she is 35, how old is her son?Oct 07,  · using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.

problems (fresh-air-purifiers.com3) and multiplicative comparison problems (fresh-air-purifiers.com2). In Lesson 12, students extend their Write your own word problem to correspond to this tape diagram, and solve. lesson 4: write word problems and equations.

lesson 5: multiply and divide with 7. lesson 6: square numbers lesson 3: word problems with unknown starts. lesson 4: comparison problems. lesson 5: comparison problems with misleading language. lesson 6: word problems with extra, hidden, or not enough information.

Math Lessons Online Unit 3. Unit 3 Lesson 18 - Classify Word Problems Lesson Objectives: 1. Understand and apply a classification system for common addition and subtraction situations. 2. Solve word problems with both additive and multiplicative comparisons. Represent and solve comparison word problems. 3. Understand and apply. Problem Solving: Solving Word Problems Using Unit Rates. Problem Solving: Solving Word Problems Using Unit Rates Lesson.

4. Unit 3 • Lesson 4. Lesson. 4. Another way we talk about unit rate is when we use the term represents. In the example about Quentin and his dad, the variable. L Divide Unit Fractions in Word Problems Divide Unit Fractions in Word Problems Lesson 18 Part 1: Introduction Now that you understand what it means to divide with fractions, take a look at this problem.

Write a division expression that represents the problem. Table of Contents. GRADE 2 • MODULE. 3. Place Value, Counting, and Comparison of Numbers to 1, recognize that each child in the problem represents a group of 10 toes.

They then count by tens, changing fresh-air-purifiers.com3 Read and write numbers to using base-ten numerals, number names, and expanded form.

Unit 3 lesson 18 write a word problem that represents a comparison
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