Lesson 8 Relate Quotients to Familiar Products
Let’s consider the products and quotients we know right away or can find quickly.
Warm-up Number Talk: Multiplication and Division
Find the value of each expression mentally.
Activity 1 Card Sort: Multiplication
Quiz your partner on their multiplication facts. Sort your partner’s facts into one of these columns:
know it right away
can find it quickly
don’t know it yet
Multiplication expressions I’m going to practice:
Activity 2 If I Know, Then I Know
If I know
Set the multiplication fact cards in a stack face down.
Take turns drawing a multiplication fact card.
Use the multiplication fact on the card to record a multiplication equation in the “If I know …” column.
Then, record related division equations in the “Then I know …” column.
If I know … | then I know … |
---|---|
If I know … | then I know … |
---|---|
Practice Problem
Problem 1
For each multiplication equation, write a related division fact you know from the multiplication equation.