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Working with Numbers
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Working with Numbers
Make a selection on the left.
Unit 1 – Counting
Four and Five
Six and Seven
Order Through 10
Problem–Solving Strategy: Draw a Picture
Unit 2 – Addition
Understanding Addition
Addition Sentences
Adding 0
Vertical Addition
Unit 3 – Subtraction
Zero Property
More Subtraction Sentences
Fact Families
Problem Solving: Choose the Operation
Unit 4 – Place Value and Number Sense
Tens and Ones to 100
Before, After, Between
Comparing Numbers
Problem–Solving Strategy: Use Estimation
Unit 5 – Money
Using Pennies
Penny and Nickel
Dime
Counting On from Nickels and Dimes
Unit 6 – Time
Reading the Clock
Hour
Thirty Minutes
Problem–Solving Strategy: Use a Model
Unit 7 – Geometry and Measurement
Sides and Corners
Congruent Figures
Measuring in Nonstandard Units
Measuring in Inches
Unit 1 – Counting and Place Value
Tens and Ones to 50
Exploring 3–Digit Numbers
After, Before, Between
Ordinal Numbers
Unit 2 – Addition
Doubles
Sums to 18
Addition Practice
More Adding 3–Digit Numbers
Unit 3 – Subtraction
Fact Families 2
Understanding 2–Digit Subtraction
Understanding 3–Digit Subtraction
Subtracting 3–Digit Numbers
Unit 4 – Money
Quarter
Comparing Money: Greatest Amount
Combination of Coins
Counting Change
Unit 5 – Time
Hour 2
30 Minutes: Half Hour
15 Minutes
Minutes
Unit 6 – Geometry
Making Plane Figures
Sides and Corners 2
Congruence
Symmetry
Unit 7 – Measurement
Inches and Feet
Centimeters
Quarts, Pints, and Cups
Problem–Solving Strategy: Estimate and Measure
Unit 1 – Place Value and Number Sense
Numbers to Hundreds
Exploring Place Value
Comparing Numbers 2
Problem Solving: Use a Table
Unit 2 – Addition
Adding One– and Two–Digit Numbers
Adding Two–Digit Numbers
Exploring Three–Digit Addition
More Addition
Unit 3 – Subtraction
Subtracting One– and Two–Digit Numbers
Subtracting with Zeros
Exploring Subtraction with Zeros
Subtracting Across Zeros
Unit 4 – Multiplication
Mental Math: Reviewing Facts 0–5
Multiply: Using 8 as a Factor
Exploring Multiplying Two–Digit Numbers
Multiplying Two–Digit Numbers
Unit 5 – Division
Dividing by 3
Mental Math: Reviewing Facts
Dividing by 6
Dividing by 9
Unit 6 – Geometry and Measurement
Exploring Area
Exploring Time to the Minute
Time After the Hour
Exploring Length: Meter and Kilometer
Unit 7 – Fractions
Exploring Fractions
Exploring Part of a Group
Important Fractions
Whole Fractions
Unit 1 – Working with Numbers
Number Sense: Expressing Numbers
Comparing Whole Numbers
Adding Two–Digit Numbers 2
Subtracting Two–Digit Numbers
Unit 2 – Multiplication and Division Facts
Mental Math: Practicing Multiplication Facts
Connecting Multiplication and Division
Dividing by 4 and 5
Dividing by 8 and 9
Unit 3 – Multiplying by One–digit Numbers
Multiplying Two–Digit Numbers 2
Multiplying Three–Digit Numbers
Multiplying: More Practice
Multiplying Larger Numbers
Unit 4 – Dividing by One–digit Numbers
Exploring Patterns in Division
Dividing Two–Digit Numbers
Dividing Three–Digit Numbers
Zeros in the Quotient
Unit 5 – Multiplying and Dividing Larger Numbers
Multiplying by Two–Digit Numbers
Exploring: Dividing by Multiples of Ten
Estimating Quotients
Unit 6 – Time, Money, and Measurement
Telling Time
Exploring Subtraction and Money
Multiplying Using Money
Length: Customary Units
Unit 7 – Fractions and Geometry
Exploring Adding Fractions with Like Denominators
Exploring Subtracting Fractions with Like Denominators
Graphing Points on a Grid
Line Segments, Lines, and Rays
Unit 1 – Working with Whole Numbers
Place Value to Hundred Millions
Adding Whole Numbers
Subtracting Whole Numbers
Estimating Whole–Number Differences
Unit 2 – Multiplication
Estimating Products
Multiplying by One–Digit Numbers
Multiplying by Two–Digit Numbers 2
Multiplying by Three–Digit Numbers
Unit 3 – Division
Estimating Quotients 2
Zeros in the Quotient 2
Dividing Two–Digit Numbers 2
Dividing Larger Numbers
Unit 4 – Fractions
Comparing Fractions
Fractions in Simplest Form
Estimating Fractions
Renaming Mixed Numbers
Unit 5 – Decimals
Decimals: Thousandths
Comparing and Ordering Decimals
Adding Tenths and Hundredths
Subtracting Tenths and Hundredths
Unit 6 – Measurement
Changing Customary Units of Capacity and Weight
The Metric System
Metric Units of Length
Metric Units of Capacity
Unit 7 – Geometry
Naming Rays and Angles
Exploring Perimeter
Finding Perimeter
Finding Area of Rectangles
Unit 1 – Whole Numbers and Operations
Understanding Large Numbers
Estimating Sums and Differences
Multiplying by Two– and Three–Digit Numbers
Dividing with One–Digit Divisors
Unit 2 – Fractions
Equivalent Fractions
Adding and Subtracting Like Fractions
Adding and Subtracting Unlike Fractions
Exploring Subtraction of Mixed Numbers
Unit 3 – Multiplication and Division of Fractions
Multiplying Fractions: Another Method
Multiplying with Mixed Numbers
Dividing Fractions
Dividing Mixed Numbers
Unit 4 – Decimals
Adding Decimals
Subtracting Decimals
Connecting Decimals and Fractions
Estimating Decimal Sums and Differences
Unit 5 – Multiplication and Division of Decimals
Multiplying Decimals
Dividing Decimals by Whole Numbers
Dividing Decimals by Decimals
Rounding Decimal Quotients
Unit 6 – Measurement
Customary Units of Length
Customary Units of Capacity and Weight
Using Customary Units
Metric Units of Capacity and Mass
Unit 7 – Geometry
Constructing Congruent Angles
Estimating and Measuring Perimeter
Area of Rectangles
Exploring Volume
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