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Addition
Addition
Using an Empty Number Line to Add, Subtract, Multiply, or Divide
LearnZillion: Take Apart Numbers Within 5
LearnZillion: Use Doubles to Add and Subtract Within 20
LearnZillion: Adding and Subtracting Using Doubles Facts
LearnZillion: Fluently Add Numbers Within 20 by Making a Ten
LearnZillion: Add Within 20 by Regrouping on a Ten Frame
LearnZillion: Solve Addition Problems Using the Partial Sums Method
LearnZillion: Solve Addition Problems Using a Number Line
LearnZillion: Solve Addition Story Problems Using an Open Number Line
LearnZillion: Add Up to Four 2-Digit Numbers Using Place Value
LearnZillion: Add Three-Digit Numbers With Base Ten Blocks
LearnZillion: Three-Digit Addition with Regrouping
LearnZillion: Add Within 100 Using Base Ten Blocks
LearnZillion: Add Using the Standard Addition Algorithm
LearnZillion: Explain Addition Using the Commutative and Associative Properties
Subtraction
Subtraction
LearnZillion: Find the Difference in the Length of Two Objects
LearnZillion: Take From Within 5
LearnZillion: Use Doubles to Add and Subtract Within 20
LearnZillion: Adding and Subtracting Using Doubles Facts
LearnZillion: Subtract Within 20 by Subtracting in Parts
LearnZillion: Subtract Within 20 Using 10 Frames
LearnZillion: Solve Subtraction Problems Using a Number Line
LearnZillion: Subtract Numbers Within 100 Using Base ten Blocks
LearnZillion: 3-Digit Subtraction with Regrouping
LearnZillion: Subtract Using the Standard Subtraction Algorithm
Multiplication
Multiplication
LearnZillion: Solve Multiplication Problems: Using Repeated Addition
LearnZillion: Understand Multiplication Problems: Using Equal Groups
LearnZillion: Interpret Products Using Repeated Addition
LearnZillion: Interpret Products Using a Number Line
LearnZillion: Represent Multiplication Using Arrays
LearnZillion: Solve Multiplication Problems by Drawing an Array
LearnZillion: Use Partial Products for Multiplication
LearnZillion: Use the Standard Algorithm for Multiplication LearnZillion: Solve Multiplication Problems: Using Associative Property
Division
Division
LearnZillion: Visualizing a Division Word Problem
LearnZillion: Use Repeated Subtraction for Division
LearnZillion: Solve Division Problems by Drawing Pictures
LearnZillion: Solve Division Problems by Using Arrays
LearnZillion: Using Arrays and Partial Quotients to Solve Division Problems
LearnZillion: Use an Area Model for Division of 4-Digit Dividends by 2-Digit Divisors
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