U4L2 - Percents review.

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Presentation transcript:

U4L2 - Percents review

What is a percent?

Comparing performance 2. Mr. Berntson and Mr. Kearnan each wanted to see how well their students understood last night’s homework. Mr. Berntson gave a 15 question pop quiz and Mr. Kearnan gave a 16 question pop quiz. On average, Mr. Berntson’s students earned 12 out of 15 and Mr. Kearnan’s students earned 13 out of 16. Which teacher’s students did better? What percent of the questions did Mr. Berntson’s students get correct? What percent of the questions did Mr. Kearnan’s students get correct?

Explain to a fifth grader 3. How can you explain these? Why does 0.07= 7%? Why does 0.006 = 0.6% Why does 1.2 = 120%

Estimation 4. Lena got 26 out of 30 questions right in her science test. She estimates she got about 60% of the questions correct. Do you agree with her? If not what is your estimate? How did you get your estimate?

Mental Math?

Going bananas… 5. 20% of 7th grade students like bananas. If there are 95 students in all, how many students like bananas? How did you get your estimate?