Number Sense (Gr5) Multiply/Divide

Number Sense (Gr5) Multiply/Divide

1. Whole Number Values

   • Division (Dividend/Divisor = Quotient)
     • 3-digit by 1-digit
     • Decompose/Recompose Strategy
     • Standard Long Division (Dad,Mom,Sis,Bro)
     • Round to Estimate (Check for Reasonableness)
     • Distributive Property
     • Flexible/Hangman Division
     • Short Division
   • Multiplication (Factor X Factor = PRODUCT)
     • Basic Fact Families to 12
       • Fact Families have 4 members (i.e., 4 number sentences)
     • 2-digit X 2-digit #s
       • Use Open Arrays
     • By Powers of 10: 10, 100, 1000, etc.
       • Move decimal point to the RIGHT
     • Decompose/Recompose Strategy
     • Round to Estimate (Check for Reasonableness)
     • Commutative Property
     • Distributive Property
     • Stacking/Standard Algorithm

2. Decimal Values

   • Divide Decimals by Powers of 10
     • Move decimal point to the LEFT
   • Multiply Decimals by Powers of 10
     • Move decimal point to the RIGHT
   • Divide Decimals by 1-digit whole #s
   • Multiply Decimals by 1-digit whole #s