Mr. Bowen's Fifth Grade
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Everyday Math Unit 2: Estimation and Calculation

Updated 10-2-18
In this unit, students will study basic computation skills of whole numbers and decimals and build on their number sense abilities.

Topics studied include:
  • Addition and subtraction
  • Multiplication
  • Place value
  • Statistics (mean, median, mode, range)
  • Probability

Download the Unit 2 Objectives to view samples of each objective studied in this unit.

Download the Unit 2 Family Letter for more information about this unit, including vocabulary definitions, new algorithms, at-home suggestions, and answers to selected study link questions. Scroll down the page to find games, skills practice, and video tutorials specific to this unit of study.

One of the most important skills students will need for fifth grade math is automatic recall of addition, subtraction, multiplication, and division facts. I strongly encourage all students to practice math facts at home for at least 5 minutes each night. Our class will be charting progress as we take Facts Master practice tests each week, with the goal of correctly answering all 300 problems in under 10 minutes.

Downloads
  • Unit 2 Study Links
  • Unit 2 Vocabulary Cards
  • Multiplication Algorithms
  • Mean, Median, Mode, Range
  • Lattice Multiplication with Decimals PowerPoint
  • Lattice Multiplication PowerPoint (from Everyday Math)
  • Partial Products PowerPoint (from Everyday Math)
  • Unit 2 Study Guide + Answers!

Mr. Bowen's Tutorials
  • Addition with Decimals
  • Subtraction with Decimals
  • Partial Products Multiplication
  • Partial Products Multiplication - Area Method
  • Lattice Multiplication
  • Traditional Multiplication
  • Everyday Math Algorithms (videos from publisher)
  • Comparison of Multiplication Algorithms
  • Estimating Products
  • Estimating Sums
  • Median, Mode, Range

​Student Tutorials
  • Partial Products Multiplication
  • Partial Products Multiplication (Area Method)
  • Lattice Multiplication
  • Lattice multiplication with Decimals
  • Traditional Multiplication

Games and Interactives

I am constantly updating this page to add new content and check existing links. If you find a broken link, please email me the name of the link so I can fix it. Thank you.

Addition and Subtraction
  • Sums Stacker
  • Speed Subtraction (level 2)
  • Speed Subtraction (level 3)
  • Number Jump Fly Swatter
  • Powerlines
  • Connect Sums
  • Ghost Sums (2 digit)
  • Circuit Load
  • Hotel Decimalfornia
  • Lunch Lady
  • Math Man Estimate Sums
  • Math Man Estimate Differences
  • Add Like Mad

Statistics (mean, median, mode, range, graphs)
  • Landmark Shark (Everyday Math game)
  • Mean, Median, Mode, Range Rags to Riches
  • Mean, Median, Mode Game

Probability
  • Starfish Probability
  • Fish Tank Probability
  • Probability Fair
  • Card Sharks
  • Marble Mania
  • Probability Interactive

Multiplication, Factors, Multiples
  • Jungle Jim's Multiplication Monkeys (facts practice)
  • Speed Math (facts practice - timed)
  • Math Stax (facts practice)
  • Math-O (facts practice)
  • Bonk the Moles (facts practice)
  • Times Race (fact practice - timed)
  • Balloon Multiply (fact practice)
  • Factors Marbles
  • Octopus Multiples
  • Multiplication Arrays
  • Factor Sort
  • Mathteroids 1
  • Mathteroids 2
  • Multiplication Station
  • Math Man Estimating Products
  • Multiplication Area Model
  • Partial Products Applet
  • Lattice Applet
  • Seeing Divisibility Applet
  • Traditional Multiplication Practice 2x1
  • Traditional Multiplication Practice 2x2
  • ​Traditional Multiplication Practice 3x3

Number Sense
  • Johnnie's Math Numbers and Operations - lots of interactive tools
  • Johnnie's Math Numbers and Operations 2  - lots of interactive tools (advanced)
  • Primary Krypto (similar to 24, but with different target numbers)
  • Broken Calculator
  • Connect Sums
  • Number Balls
  • Crazy Counting Machine (click "Crazy Counter" at the top of the page)
  • Da' Numba (make a given number)
  • Count the Cubes
  • Math Pathways (rules)
  • Multiplication Baseball
  • Multiplication Baseball with Extended Facts
  • Math Lingo (math terms)
  • Twenty Four
  • 4 Numbers Game (another variation of 24)
  • Arithmetic Game
  • Hexagon Numbers Match
  • Arithmetic Chart (try Factors)
  • Estimation Game
  • Sum Sense Division
  • Sum Sense Multiplication
  • Sum Sense Subtraction
  • Sum Sense Addition
  • Picture Math
  • Math Search
  • Ivy's Meadow (Number Lines)
  • Math Man
  • Math Man Expert
  • Quick Calculate
  • Quick Math (choose the operation that completes each number sentence. Be fast!)
  • Math Lines
  • Dead Sea Duel
  • Make 15
  • Home Run Derby Math
  • Carpenter's Cut
  • Scooter Quest Rounding Decimals

Place Value
  • Johnnie's Math Place Value - lots of games and interactive tools
  • Place Value Pirates
  • Ordering Numbers (try "Tricky Decimals")
  • Place Value Strategy
  • Mystery Numbers
  • Expanded Form Matching
  • Scooter Quest Place Value
  • Place Value Puzzler
  • Math Man Expanded Form
  • Digit Wize (expanded form)
  • Place Value Game
  • Fruit Shoot Place Value Decimals (leveled)
  • Fruit Splat Compare Decimals
  • High Number Toss

Skills Practice


Need more practice with exponents? Want to make sure you understand place value? Try some of these practice quizzes.

Statistics (mean, median, mode, range, graphs)
  • Finding the Median 1
  • Finding the Median 2
  • Finding the Median 3
  • Finding the Mode
  • Finding the Range 1
  • Finding the Range 2
  • Finding the Range 3
  • Finding the Range 4

Multiplication
  • Missing Factors 1
  • Missing Factors 2
  • Missing Factors 3
  • Missing Factors 4
  • Visualize Multiplication (build arrays)

Exponents
  • Exponents Practice 1
  • Exponents Practice 2               
  • Exponents Practice 3              
  • Exponents Practice 4
  • Exponents Practice 5

Place Value
  • Place Value Practice 3
  • Standard and Expanded Form Practice 1
  • Standard and Expanded Form Practice 2
  • Standard and Expanded Form Practice 3
  • Standard and Expanded Form Practice 4
  • Standard and Expanded Form Practice 5
  • Standard and Expanded Form Practice 6
  • Standard and Expanded Form Practice 7
  • Writing Large Numbers Practice 1
  • Writing Large Numbers Practice 2
  • Writing Decimals Practice (10ths)
  • Writing Decimals Practice (100ths)
  • Writing Decimals Practice (1000ths)
  • Writing Decimals Practice (mixed)

Rounding, Ordering
  • Rounding Decimals Practice 6
  • Rounding Decimals Practice 7
  • Rounding Decimals Practice 8
  • Rounding to Given Place Value
  • Ordering Whole Numbers and Decimals

Video Tutorials


Forgot how to round whole numbers? Can't remember how subtraction with regrouping works? Watch these video tutorials from the Khan Academy and LearnZillion (free account required). Most video clips are between 5 and 10 minutes in length and are presented in a simple, yet easy-to-understand format.

Rounding
  • Rounding Whole Numbers 1
  • Rounding Whole Numbers 2
  • Rounding Whole Numbers 3
  • Rounding Decimals
  • Rounding Decimals (LearnZillion)

Comparing and Ordering Decimals
  • Comparing Place Values
  • Comparing Decimals
  • Comparing Decimals (LearnZillion)
  • Ordering Decimals

Place Value
  • Regrouping Whole Numbers 1
  • Regrouping Whole Numbers 2
  • Regrouping Decimal Numbers 1
  • Regrouping Decimal Numbers 2
  • Finding a Number's Place Value
  • Writing a Number in Standard Form
  • Writing a number in Expanded Form
  • Decimal Expanded Form
  • Decimals to Words
  • Decimals to Words 2
  • Reading Decimals
  • Reading and Writing Decimals (LearnZillion)
  • Reading and Writing Decimals 2 (LearnZillion)
  • Comparing Place Values
  • Place Value Relationships
  • Decimals on a Number Line
  • Decimals on a Number Line 2
  • Estimation with Decimals
  • Value of Digits (LearnZillion)
  • Value of Digits 2 (LearnZillion)

Addition
  • Adding 3-Digit Numbers
  • How Carrying Works
  • Adding Decimals 1
  • Adding Decimals 2
  • Adding Decimals 3
  • Adding Decimals Word Problem

Subtraction
  • Subtracting with Regrouping 1
  • Subtracting with Regrouping 2
  • Subtracting with Regrouping Twice
  • Subtraction with Zeros
  • Subtraction World Problem
  • Subtracting Decimals 1
  • Subtracting Decimals 2
  • Subtracting Decimals Word Problem

Multiplication
  • Ways to Represent Multiplication
  • Multiplication Area Model 1
  • Multiplication Area Model 2
  • Lattice Multiplication
  • Why Lattice Multiplication Works
  • Multiplying by Multiples of 10
  • Partial Products (from Everyday Math)
  • Partial Products Decimals (from Everyday Math)
  • Traditional Multiplication (from Everyday Math)
  • Traditional Multiplication 2x2 Digit (from Everyday Math)
  • Multiplying 2-Digit by 1-Digit
  • Multiplying 2-Digit by 1-Digit With Regrouping
  • Multiplying 3-Digit by 1-Digit
  • Multiplying 3-Digit by 1-Digit with Regrouping
  • Multiplying 2-Digit by 2-Digit
  • Multiplying 2-Digit by 2-Digit
  • Multiplying Multi-Digit Numbers
  • Introduction to Decimal Multiplication
  • Multiplying Decimals Word Problem
  • Multiplying Decimals - Place Value Connection
  • Complex Decimal Multiplication
  • Estimating Products
  • Multiplication Algorithms (LearnZillion)

Statistics
  • Introduction to Mean, Median, Mode (requires basic understanding of division)
  • Calculating Mean, Median, Mode
  • Finding a Missing Value Given the Mean
  • Median and Range Puzzle

Probability
  • Basic Probability

Advanced Practice


  • 6th Grade Level Practice
  • 7th Grade Level Practice
  • Math Challengers
  • Advanced Math Games
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