6-6 Multiplication and Division Diagrams

6-6 Multiplication and Division Diagrams

Have your whiteboard or pencil and paper ready.

For the problem on the next slide, record at least 2 different number models with a ? or another symbol for the unknown to represent this story.

Math Message

Annette has bags of grapes for her team. In each bag there are 5 grapes. There are 45 grapes in all. How many bags does Annette have?

Open Ended

Share your two number models for the math message.

Equation

a number sentence that contains an equals sign (=)

How to represent the unknown?

You could use a question mark ?, picture, letter, box, or another symbol to represent the unknown value.

Multiple Choice

What is the unknown in the number story from the math message?

• the number of bags of grapes

• the number of grapes

• how many grapes in all

• the number of teams

 $B\times5=45\ or\ 45\div5=B$  

Revise your equations using B as the unknown quantity.  B for bags of grapes.

Grab the multiplication/division diagram sheet from your last supply pick up

read the number story, record the equation to match the story and then solve

Anna has 8 bags of rubber bands. Each bag has the same number of rubber bands. Anna has 56 rubber bands in all. How many rubber bands are in each bag?

Open Ended

What do you understand from reading the number story about Anna?

Multiple Choice

What do we need to find out?

• How many rubber bands in a bag.

• How many bags of rubber bands Anna has.

• How many rubber bands in all.

Repeat the process from the video on the next problem.

There are 72 third graders at field day. The gym teacher wants to group them into teams of 8. How many teams can they make?

Multiple Choice

Which number model fits the field day story?

• $T\times8=72$

• $T+8=72$

• $72\div9=T$

Try it out....

There are 6 fruit bowls and a total of 54 oranges to divide equally among the bowls. How many oranges should be placed in each bowl?

Multiple Choice

Which number model fits the fruit bowl problem?

• $54+6=B$

• $54-6=B$

• $54\div B=6$

All Done!