On September 28th, at Ciara’s appointment for her annual physical exam, she measured 3 feet 11.5 inches tall. At her last appointment on May 31st, she measured 4 feet 3 inches. Based on this, what was the average number of inches Ciara grew each day from September 28th to May 31st? Express your answer as a common fraction.

The countdown round is often the most anticipated and exciting part of competition for Mathletes^® and spectators alike. Here are some of our favorite countdown round problems from the 2019 competitions

School #16
On a certain farm, each chicken has two feet and each rabbit has four feet. If the combined number of chickens and rabbits on the farm is 100 and there are a total of 260 feet on these animals, how many chickens are there?

The countdown round is often the most anticipated and exciting part of competition for Mathletes^® and spectators alike. Here are some of our favorite countdown round problems from the 2019 competitions

School #16 On a certain farm, each chicken has two feet and each rabbit has four feet. If the combined number of chickens and rabbits on the farm is 100 and there are a total of 260 feet on these animals, how many chickens are there?

“Job well done!” to all the Mathletes^® who participated in the MATHCOUNTS Competition Series at the school, chapter and state levels. And congratulations to the 224 students who are headed to Orlando next month to compete in the 2019 Raytheon MATHCOUNTS National Competition! Let’s look at some of the challenging problems competitors faced on the road to Nationals!

School Target #8

Over the weekend, the world’s most famous groundhog, Punxsutawney Phil, enjoyed his favorite day of the year – Groundhog Day! According to historical data on Stormfax^® Weather Almanac’s website (stormfax.com/ghogday), Phil has predicted a long winter 104 times, and an early spring 18 times from 1887 to 2018 (no data for nine of these years). That makes the odds of Phil seeing his shadow, thereby predicting six more weeks of winter for this year, 52 to 9. Based on this information, what is the percent probability of Phil seeing his shadow?

Chapter competitions officially start this week! Are you ready to compete? Perhaps solving these Sprint Round problems from the 2018 Chapter Competition will help you warm up.  

Sprint #15
By switching two of the digits of the number 123,456, Rodrigo obtains a new number that is 1980 more than the original. What is the product of the two digits Rodrigo switched?