MULTI-DIGIT

MULTIPLICATION WITH

WORD PROBLEMSSEPTEMBER 19, 2014

GOAL:•I CAN FLUENTLY MULTIPLY MULTI-DIGIT WHOLE NUMBERS USING THE STANDARD ALGORITHM TO SOLVE MULTI-STEP WORD PROBLEMS.

AGENDA •ESTIMATE THE PRODUCT: REVIEW

•STANDARD ALGORITHM AND AREA MODEL

•WHOLE GROUP WITH WORD PROBLEMS

•SMALL GROUPS

•EXIT TICKET

•A STAR……..A WISH

ESTIMATE THE PRODUCT

•412 X 231 ≈ _______

•523 X 298 ≈ _______

•684 X 347 ≈ _______

AREA MODEL:

2, 546 X 328

STANDARD ALGORITHM

•2, 546 X 328

PRIVATE THINK TIME AND SMALL GROUP

REMEMBER: WHEN WE ARE USING PRIVATE THINK TIME, I WANT YOU TO THINK ABOUT THE STEPS TO YOURSELF.

SMALL GROUP: LISTEN TO WHAT YOUR GROUP MEMBERS HAVE TO SAY. THEY MAY USE A DIFFERENT STRATEGY TO GET THEIR ANSWER.

WORD PROBLEM

•IN THE TROPICAL RAIN FOREST, THERE ARE 459 DIFFERENT 2ND LEVEL CONSUMERS. IF EACH CONSUMER ATE 143 1ST LEVEL CONSUMERS HOW MANY 1ST LEVEL CONSUMERS ARE EATEN?

WORD PROBLEM

•MS. FRIZZLE WANTED HER STUDENTS TO RAISE THE MOST MONEY FOR THE SCHOOL FUNDRAISER. SHE TOLD HER STUDENTS, IF EACH PERSON ROSE $34 WE WOULD RAISE THE MOST MONEY. HOW MUCH MONEY WOULD HER CLASS RAISE?

•IF ALL 30 CLASSES AT SPS RAISED THE SAME AMOUNT, HOW MUCH MONEY WOULD SPS RAISE?

WORD PROBLEM

•AN OFFICE SPACE IN NASHVILLE MEASURES 52 FEET BY 63 FEET. IF IT SELLS FOR $565 PER SQUARE FOOT, WHAT IS THE SELLING PRICE OF THE OFFICE SPACE?

PROBLEM SET

•YOU ARE TO WORK ON THE PROBLEM SET INDEPENDENTLY.

•I WILL BE WORKING WITH A SMALL GROUP AT MY TABLE.

•IF YOU GET FINISHED: ON THE BACK, I WANT YOU TO CREATE 3 MULTI-STEP WORD PROBLEMS WITH MULTI-DIGIT MULTIPLICATION. YOU MAY SOLVE THEM!

GOAL

•I CAN FLUENTLY MULTIPLY MULTI-DIGIT WHOLE NUMBERS USING THE STANDARD ALGORITHM TO SOLVE MULTI-STEP WORD PROBLEMS.

MATH PRACTICES• MP 1 MAKE SENSE OF PROBLEMS AND PERSEVERE IN SOLVING THEM

• MP 2 REASON ABSTRACTLY AND QUANTITATIVELY

• MP 3 CONSTRUCT VIABLE ARGUMENTS AND CRITIQUE THE REASONING OF OTHERS

• MP 4 MODEL WITH MATHEMATICS

• MP 5 USE APPROPRIATE TOOLS STRATEGICALLY

• MP 6 ATTEND TO PRECISION

• MP 7 LOOK FOR AND MAKE USE OF STRUCTURE

• MP 8 LOOK FOR AND EXPRESS REGULARITY IN REPEATED REASONING

EXIT TICKET

•THIS IS GOING TO SHOW ME WHAT YOU LEARNED TODAY.

•MAKE SURE YOU READ EACH QUESTION CAREFULLY AND KNOW WHAT IT IS ASKING YOU!

A STAR……A WISH

•ON ONE STICKY NOTE, I WANT YOU TO WRITE ONE THING THAT YOU LEARNED FROM TODAY’S LESSON THAT YOU DIDN’T KNOW BEFORE.

•ON ANOTHER STICKY NOTE, I WANT YOU TO WRITE SOMETHING THAT YOU WOULD LIKE MORE HELP ON FROM TODAY’S LESSON.

•MAKE SURE YOUR NAME IS ON BOTH STICKY NOTES, PLEASE!