3rd Grade Multiplication/ Division

3rd Grade Multiplication/ Division

1. Other Vocabulary

   • Properties of 3.OA.B5
     • Commutative
     • Associative
     • Distributive

2. Mental Math/ Methods

   • 2. Determining if Reasonable 3.OA.D.10
     • Estimation
     • Rounding
   • 3. Multidigit multiplication
     • Tricks/ Short Cuts
       • Lattice Method
       • "Short Cut"
       • "Pluck the zero"
   • 1. Decomposing the number
     • Box Method
     • On an Array

3. Beginning Concepts :

   • 2. As Groups of
     • Multiply 3.OA.1
     • Divide 3.OA.2
   • 6. Facts Fluency 3.OA.C.7
   • 5. On a Multiplication Chart 3.OA.D.9
     • Use the chart
     • Patterns on the chart
   • 3. As Arrays 3.OA.3
   • 1. As Repeated Addition/Subtraction (Examples on AZCCRS 3.OA.A.3)
   • 4. On a Number Line (Examples on AZCCRS 3.OA.A.3)

4. Advanced Concepts

   • Multiplying by 10's 3.NBT.A.3
   • Remainder

5. CGI (Problem Solving) & Practice

   • 2. Word Problems (CGI) 3.OA.3
     • Unknown product (CGI)
     • Equal Groups
     • Arrays
     • Compare
     • Unknown number of groups
     • Unknown group size
     • With measurement quantities
   • 1. Number problems 3.OA.4 , 3.OA.B6
     • Equal sign alternate side 12= 3 x 4
     • Unknown product/ quotient 3 x 4 = ?
     • Unknown number of groups __ x 3 = 12
     • Unknown group size 4 x __ = 12
     • With measurement quantities 3.OA.3 4 x 3 inches = 12 inches
   • 3. 2-Step Word Problems (CGI) 3.OA.D.8