2by2 Problem Solving

​Problem Solving

How and why do we solve problems the way that we do...

How would you solve this, and WHY?

​We do no want the answer.

Mrs. Moore took her 4th grade class of 25 students to the aquarium. Admission for each student was $12. What was the total amount of money needed for the field trip?

First I would .... because...
Then I would...because...

Multiple Choice

How will we solve this problem?

Mrs. Moore took her 4th grade class of 25 students to the aquarium. Admission for each student was $12. What was the total amount of money needed for the field trip?

• Addition

• Subtraction

• Multiplication

• First add and then multiply

Multiple Choice

Why do will we solve this problem this way?

Mrs. Moore took her 4th grade class of 25 students to the aquarium. Admission for each student was $12. What was the total amount of money needed for the field trip?

• Since we have two groups we are putting together to find the total.

• We multiply because we have equal groups of 12 and we need to find the total

Multiple Choice

SOLVE.

Mrs. Moore took her 4th grade class of 25 students to the aquarium. Admission for each student was $12. What was the total amount of money needed for the field trip?

• $300

• $11

• $400

• $330

Multiple Choice

How will we solve this problem?

Eighty-seven students were passing around a petition to stop the historical building from being demolished. Each student collected 92 signatures. What was the total number of signatures the students collected?

• Addition

• Subtraction

• Multiplication

• Add then multiply

Multiple Choice

Why do we will we solve this problem this way?

Eighty-seven students were passing around a petition to stop the historical building from being demolished. Each student collected 92 signatures. What was the total number of signatures the students collected?

• We multiply because we have equal groups of 92 signatures teach student collected

• We multiply because we have two groups that get added together

Multiple Choice

Eighty-seven students were passing around a petition to stop the historical building from being demolished. Each student collected 92 signatures. What was the total number of signatures the students collected?

• 8,000

• 800

• 8,004

• 179

Draw

Sandy walks 26 miles in a month. If she were consistent in her walking for 2 years (24 months), how many miles would she have walked?

How did you solve this, and WHY?

Sandy walks 26 miles in a month. If she were consistent in her walking for 2 years (24 months), how many miles would she have walked?

First I .... because...
Then I ...because...