Addition and subtraction number stories

Slides:

Advertisements

Similar presentations

1-3 Open Sentences In this section we are going to define a mathematical sentence and the algebraic term solution. We will also solve equations and inequalities.

Advertisements

Everyday Math Grade 4 – Lesson 3.9 Parentheses in Number Sentences Copyright © 2010 Kelly Mott.

Everyday Math Grade 4 – Lesson 3.10 Open Sentences

Copyright © Cengage Learning. All rights reserved. 6 Equations and Formulas.

Lesson 1-5 Solving Inequalities September Objective:

Intro to Algebra/Geometry Solving Equations by Adding or Subtracting.

Introduction Inequalities are similar to equations in that they are mathematical sentences. They are different in that they are not equal all the time.

Jeopardy! One Step Equations. Grid Sheet 100 pts.200 pts. 300 pts. 400 pts.500 pts. Vocab Add Subtract

3.1 Inequalities and Their Graphs:

September 17, Addition and Subtraction Number Stories.

Everyday Math Grade 4 – Lesson 3.10 Open Sentences Copyright © 2010 Kelly Mott.

Solving Systems Using Elimination. Elimination When neither equation is in the slope- intercept form (y =), you can solve the system using elimination.

WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable. (Lesson 1.1) 1.(8)(x) when x = /x when x = 3 3.x + 15.

Expressions Objective: EE.01 I can write and evaluate numerical expressions involving whole number exponents.

Homework Answers: Workbook page 2 1)N, W, Z, Q, R13) Assoc. (X)25) 8x – y – 3 2)I,R14) Comm. (X)26) -4c 3)I, R15) Add. Inverse27) -5r – 58s 4)W, Z, Q,

1. solve equations with variables on both sides. 2. solve equations containing grouping symbols. 3.5 Objectives The student will be able to:

Variables Tutorial 3c variable A variable is any symbol that can be replaced with a number to solve a math problem. An open sentence has at least one.

Transparency 5 Click the mouse button or press the Space Bar to display the answers.

1.4 Solving Equations ●A variable is a letter which represents an unknown number. Any letter can be used as a variable. ●An algebraic expression contains.

What are the challenges? To know how to translate word problems into a workable mathematical equation. To know where to start and how to go about figuring.

Open Sentences.

3.11 Open Sentences. Homework Review Mental Math Find the sum or difference. 16 – 5 = ____ = ____ = ____ 210 – 30 = ____ = ____.

Mr. Gifford’s 5th Grade Math

Equations and Inequalities. Equation – A sentence stating that two qualities are equal. Includes a variable – 3x + 5 = 17 Equation variable The solution.

Give these a try…. Answers Self Quiz Self Quiz Answers.

Everyday Math Unit 6 Vocabulary Miss Beasley. 6.1 and 6.2 Reciprocals- pairs of numbers whose product is 1. – Example: 2 is the reciprocal of ½ Division.

Lesson 3-4 Solving Multi-Step Inequalities August 20, 2014.

Grade 5 – Unit 2 Estimation and Computation

Algebra Equations Lesson 1-7 Pages Equations An Equation is a sentence that contains an equals = sign. The equals = sign tells you that the expression.

MODULE 3 LESSON 15. OBJECTIVE Explore a situation with more than 9 groups of ten.

Solve the following equations for x: 1) 2) 3) 4) 5) 6)

1.3 Open Sentences A mathematical statement with one or more variables is called an open sentence. An open sentence is neither true nor false until the.

Lesson 1.4 Equations and Inequalities Goal: To learn how to solve equations and check solutions of equations and inequalities.

PowerPoint created by Parsheena Berch Resource : JBHM material Pictures: Google Images.

Solving Addition and Subtraction Equations Lesson 6-2 Page 225.

1. 2 Translating Addition Phrases  The sum of 6 and a number  8 more than a number  A number plus 5  A number increased by 7.

Welcome Back to Math January 25, 2016 Today you will need:a pencil and eraser, your notebook, your tablet Math Message: Write an expression using letters.

Everyday Math Grade 4 – Lesson 3.10 Open Sentences Copyright © 2010 Kelly Mott.

Lesson 2-3: Solving Equations by Multiplication and Division Algebra 1 CP Mrs. Mongold.

Equations. An equation is a mathematical statement that shows 2 quantities are equal. An equation.

Winter Warm up There are 25 students in my class. 17 said they would go snow skiing this year, 20 said they would go to Universal Studios and 4 would not.

Bell Work8/12/14 Solve the equation. Yesterday’s Homework 1.Any questions? 2.Please pass your homework to the front. Make sure the correct heading is.

1.7 Intro to Solving Equations Objective(s): 1.) to determine whether an equation is true, false, or open 2.)to find solutions sets of an equation 3.)to.

Lesson 5.1/5.2 – Writing Expressions and Equations Write this TITLE down on your notes!!! 5.1 /5.2 Writing Expressions and Equations.

Miss Tilton.  Equation: a math sentence with an equal sign  7x = – 35  Solution: a value for a variable that makes an equation true.  7x = – 35 

Grade 5 Lesson 2.7 Estimating products Objective: To provide experiences with making and using magnitude estimates for products of multidigit numbers,

A number sentence is a short way of writing a mathematical expression. EXAMPLE I could write: eight plus six equals fourteen or I could write it this way:

Everyday Math Grade 4 – Lesson 3.9 Parentheses in Number Sentences Copyright © 2010 Kelly Mott.

Everyday Math Grade 4 – Lesson 3.10 Open Sentences Copyright © 2010 Kelly Mott.

Grade 5 Lesson 2.10 Comparing Millions, Billions and Trillions Objective: To provide experience with comparing the relative sizes of 1 million, 1 billion,

Prime and Composite Numbers

Solving Linear Inequalities Chapter Solving Inequalities by Addition and Subtraction CLE ; SPI Solve problems involving linear equations.

< > < < Solving Inequalities < < < >.

Solving Equations with Grouping Symbols

Solving Equations with the Variable on Each Side

Lesson 3.5 Solving Equations with the Variable on Both Sides

1-5 Equations Goals: Solve equations with one variable

Solving Inequalities Lesson 7.6.

< > < < < < < > Solving Inequalities

< > < < < < < > Solving Inequalities

OBJECTIVE: Students will solve multistep equations.

3-1 Inequalities and their Graphs

< > < < < < < > Solving Inequalities

Solving One-Step Equations

< > < < < < < > Solving Inequalities

Do Now Evaluate 9h + h if h = 2.1 Evaluate 2 (4 + g) 2 If g = 6.

Lesson 1 – 4 Solving Equations.

< > < < < < < > Solving Inequalities

Presentation transcript:

Addition and subtraction number stories Grade 5 lesson 2.4 Addition and subtraction number stories Objective: to review the use of mathematical models to solve number stories

Math Message Niko has $8.00. Does he have enough money to buy 3 fancy pencils for $1.98 each and an eraser for $1.73? What is the total cost of the 3 pencils and the eraser? How did you find this information out? Write it in your ISN.

Number Sentences (write these in your ISN) A true number sentence is a sentence in which the relation symbols and operation symbols combine to create a sentence where both sides of the sentence are equal to each other. A false number sentence has sides that are not equal to each other. A number sentence that contains a variable is called an OPEN number sentence. Open number sentences are neither true or false. (they become true or false when we replace the variable with a number. 4 + 5 = 9 4 + 5 = 31 4 + 5 = x

Relation & operation symbols (write these in your isn) Relation Symbols < means is less than > means is greater than = means is equal to Operation Symbols + means plus - means minus X or * means times / or ÷ means divided by Number sentences MUST have a relation symbol. Number sentences MUST also have an operation symbol.

What makes a good problem solver? A good problem solver is someone who has learned how to organize information to find a solution when he or she is not sure how to get the correct answer. Learning many different ways to do many different types of problems gives you the ability to organize information in many different ways. Find page 41 – Situation Diagrams Open your Student Reference Book to pages 242-243 Read the four steps of the guide and determine the type of situation in the problem. Is it – parts and total? Change to more? Change to less? Or is it a comparison problem?

Find math masters page 42 In pairs or groups of 3, complete lesson 2.4 Math masters page 42, Using Open number sentences. Remember, an Open Number Sentence uses a VARIABLE. You MUST have a letter in place of an unknown number in your sentences. What letter do you choose? You CAN choose ANY letter. However, most people choose a letter that represents what they are trying to find out. For example, if I wanted to know how many tea bags fell into the Boston Harbor, I might use the letter t. (Always use a lowercase letter for now.)

Further practice Complete student workbook pages 37 and 38. You may need to use page 415. If you need a computational grid, feel free to get yourself one. (a computational grid is grid paper!) We have it in whiteboard form as well.

Game Name that Number (student reference book page 325)

Homework – Enrichment – Extra Practice Page 43 Open Sentences and Number Stories is homework for this lesson. Please complete page 44 if you would like additional practice. – Using situation diagrams. Enrichment for this lesson is page 45 – Writing open number sentences.