Elementary Test Prep Math 4 (Grade 4) Relevant and Irrelevant Information

Relevant and Irrelevant Information
Lesson
Topic Index | Grade 4 Math | Elementary Test Prep | StudyZone

relevant- information that is important

irrelevant- information that is not needed

I own 3 dogs. There names are Riley, Shadow, and Tapper. Riley is 1 years old. Shadow and Tapper are the same age. When you add all 3 dogs ages it equals 7. Riley is a black lab. Shadow and Tapper are little dogs. How old are my 3 dogs?

Let's list all of the information, and classify it as either relevant or irrelevant.

I own 3 dogs.	*relevant*
There names are Riley, Shadow, and Tapper.	irrelevant
Riley is 1 years old.	*relevant*
Shadow and Tapper are the same age.	relevant
When you add all 3 dogs ages it equals 7.	*relevant*
Riley is a black lab.	irrelevant
Shadow and Tapper are little dogs.	*irrelevant*
How old are my 3 dogs?	*relevant*

Once we see what information is important (relevant) it's easy to see how to solve the problem.

Riley is 1
Tapper and Shadow are the same age.
1 + n + n = 7

1 + 3 + 3 = 7

The dogs are 1, 3, and 3.

Let's Practice!
click here

Topic Index | Grade 4 Math | Elementary Test Prep | StudyZone