Addition and Subtraction in Context

Slides:

Advertisements

Similar presentations

Add and Subtract Multiples of 100

Advertisements

Multiplication Take 1 By Miss O.. Meanings for Multiplication Solve to review: = = = What do you notice about solving.

Two-Step Word Problems

An Introduction to Addition

Lesson 6-4 Example Solve. CARS Frankie was counting the cars in the parking lot across from the park. When he got to the park, there were 32 cars.

Module 4 Lesson 14 Find areas by decomposing into rectangles or completing composite figures to form rectangles.

ELT Week of October 8 1.Take out a piece of paper! Read over the Performance task (take one) and use the next 10 minutes to work on the problem individually.

Adding and Taking Away The Easy Way Mental Maths Learning Objectives I will be able to use a number of different mental strategies to add and subtract.

REAL LIFE MATH or WORD PROBLEMS There are 4 basic steps that can help you to solve word problems. 4.

7.8 Adding Positive and Negative Numbers Miss Hepner.

Solving Two Step Equations August 19,2013 WELCOME! Math is used in everyday life activities consciously and unconsciously. Objective: The student will.

Splash Screen. Lesson Menu Five-Minute Check (over Lesson 10–9) Main Idea Example 1:Rename Mixed Numbers to Subtract Example 2:Rename Mixed Numbers to.

Subtraction Strategies. draw a picture = Step 1, draw 85. Step 2, mark off 12. Step 3, what is left? = 73.

Guide to Solving Number Stories Math…no problem!.

Subtract Away your Fears By: Rebecca Gilroy Introduction: As a class we are going to review simple subtraction and start applying it to word problems.

Simultaneous Equations 8 January, 2016 What are simultaneou s equations Let me explain. If you have an equation like: x + y = 5, there are lots of answers.

The temperature was 45°F at 9:30 am and 65°F at 4:20 PM. The temperature decreased by about 3°F per hour until sunset at 6:20 PM. How much warmer was the.

Example 3 In parts of New York City, the blocks between streets are called short blocks. There are 20 short blocks per mile. Blocks between avenues are.

© 2007 M. Tallman A Mental Math Strategy. © 2007 M. Tallman = 364 Step 1: 96 is close to 100; 100 is a much easier number to.

What's that Fraction? Comparing and Ordering Fractions Equivalent Fractions and Simplest Form Adding and Subtracting.

Module 6 Lesson 4. Objective Represent equal groups with tape diagrams, and relate to repeated addition.

Comparative Relational Thinking

Ms. Ambrosino’s Pumpkin Patch (: First Grade Addition and Subtraction.

Money Word Problems Today we will learn to solve word problems involving money by: Understanding the problem Learning to identify clue words Using manipulatives.

WORD Problems?!?.

Tape Diagrams and Equal Groups

5-Step Problem Solving Strategy

Interesting Integers! REVIEW

Unit 3: Addition Strategies Review

5Th Class Maths Additon & Subtraction.

Standards California Preparation for AF2.0

Objective: Be able to add and subtract directed numbers.

Problem-Solving Steps Solve Problem-Solving Steps Solve

Interesting Integers!.

First Grade Parent University

Unit 7 Lesson 1.5 Sharing Several Brownies

2.NBT.7 Add and Subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship.

Add and Subtract Mixed Numbers

Year 1 (National Numeracy Strategy) (Based on DFEE Sample Lessons)

Objective The student will be able to:

= Magic Math (Checking)

Reception (National Numeracy Strategy) (Based on DFEE Sample Lessons)

Add or Subtract? x =.

Divide the number in C by 10.

Adding and Subtracting Decimals

Math Journal Notes Unit 3.

Adding and Subtracting Decimals

Word Problems extra information.

Solving One and Two Step Equations

MCAS practice questions Grade 4 Miss Beck 2013

Objective translate verbal sentences into equations.

Year 2 Autumn Term Week 9 Lesson 2

Reception (National Numeracy Strategy) (Based on DFEE Sample Lessons)

1-7 Subtracting Integers

2.NBT.7 Add and Subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship.

Year 2 Autumn Term Week 9 Lesson 2

Year 1 (National Numeracy Strategy) (Based on DFEE Sample Lessons)

Math Journal Notes Unit 4.

Simultaneous Equations

grade 3-4 addition and subtraction

Objective: Be able to add and subtract directed numbers.

Finding The Mean.

What do you think it means? Before:

Order of Operations  + - X.

Bellwork, Tuesday April 2, 2019

Solving Word Problems Solve real-world and mathematical problems requiring arithmetic.

Using Bar Models to Make Math Visual

Presentation transcript:

Addition and Subtraction in Context

How do we know when to use addition or subtraction How do we know when to use addition or subtraction? Key words give us hints. They tell us if we need to add or subtract! Addition Key Words Subtraction Key Words

Miss K has 12 cousins in all. Five of them are boys. How many are girls? What are some strategies we can use to figure this out? Look for key words to figure out if you need to add or subtract Draw a simple picture or diagram How many steps do we need to take to solve this problem? Or… CUBES!

Write these in your math notebook!

Miss K has 12 cousins in all. Five of them are boys. How many are girls?

Miss K has 12 cousins in all. Five of them are boys. How many are girls?

Miss K has 12 cousins in all. Five of them are boys. How many are girls?

Miss K has 12 cousins in all. Five of them are boys. How many are girls? Make sure the picture is simple!

Miss K has 12 cousins in all. Five of them are boys. How many are girls?

Use the C.U.B.E.S. strategy to solve: A garden has 103 flowers in it. Forty-nine of them are roses, 28 of them are mums, and the rest are tulips. How many flowers in the garden are tulips? 103 Flowers Roses Mums Tulips

Another way to check our answer… If we start with 103 flowers, 103 We can subtract the roses, 103 – 49 = 54 Then we can subtract the mums from that, 54 – 28 = 26 And the difference is the number of tulips: 26 tulips

Let’s practice finding the missing addend: 59 + 82 + _____ = 200 21 + 44 + _____ = 95 98 + 37 + _____ = 492

Use the C.U.B.E.S. strategy to solve: A factory has 3,478 bags of candy. The factory shipped out 239 bags of candy to a grocery store in New York City. The factory shipped out 312 bags to a grocery store in Boston. How many bags of candy were left at the factory? Am I supposed to draw over 3,000 bags of candy?