Multiplying Fractions

Tape Diagram

Goal

I will solve word problems using a tape diagram and fraction by fraction multiplication

Agenda

Fluency Multiply Fractions Multiply whole numbers by

decimals

Whole class

Problem set

Exit ticket

Fluency: Multiply Fractions

1/3 of 2/5

2/3 of 2/5

3/5 of 2/3

3/5 x 3/4

Fluency: Multiply Whole Numbers by Decimals

3 x ______ = 3/10

7 x .1 = _______

7 x .01= _______

9 x .1= _______

80 x .01 = _______

15 x 1/10= _______

Anthony bought an 8 foot board. He cut off ¾ of the board to build a shelf, and gave 1/3 of the rest to his brother for an art project. How many inches long was the piece Anthony gave to his brother?

Mrs. Jones made 60 cookies for a bake sale. She sold 2/3 of them and gave ¾ of the remaining cookies to the students working at the sale. How many cookies does she have left?

Answer

Sold Sold

___________________________60______________________________

_________20_____

¼ x 1/3 = 1/121/12 x 60 = 60/12= 5

3 units= 60I unit= 60/3= 2020/4= 5

Lukas spent 1/3 of his money on a burrito and a water. The burrito cost 2 times as much as the water. The burrito cost $4, how much money does Lukas have left?

Answer

Burrito and Water

B B W

_______$4_____

2 units = 4 1 unit = 4/23 units= 62x6= 12

Dean is sorting his rock collection. 2/3 of the rocks are metamorphic and ¾ of the remainder are igneous rocks. If the 3 rocks left over are sedimentary, how many rocks does Dean have?

Problem Set

You will have ______ minutes to complete the problem set. You are to work alone.

I will be calling students to the back table.

If you are willing to help please move your number on the board Those that get stuck may ask one of these

people for help.

Exit Ticket

You will have three minutes to solve the exit ticket. Please draw a tape diagram and circle your final answer.

What did we learn?