- Algebraic Expressions and Equations
- General Math
- Percents and Fractions
- Problem Solving (Misc.)
When Riya’s alarm went off on the first day of her senior year in high school, she hit the snooze button and slept for another 10 minutes. When the alarm sounded the next time, Riya got up and...
- General Math
- Probability, Counting and Combinatorics
- Problem Solving (Misc.)
- Sequences, Series and Patterns
In 1998, Nkem Chukwu gave birth to the first set of surviving octuplets. The eight babies weighed from 11.3 ounces to 28.6 ounces at birth. Leonard Weisman, the Texas Children’s Hospital’s chief of...
- General Math
- Measurement
- Probability, Counting and Combinatorics
- Problem Solving (Misc.)
The Iditarod sled-dog race is run on a trail that was originally a mail-supply route. In 1925, part of the trail became a lifesaving highway for the children who lived in Nome. The Iditarod is...
- Algebraic Expressions and Equations
- Probability, Counting and Combinatorics
- Problem Solving (Misc.)
- Sequences, Series and Patterns
Abby, Brenda, Celia, Denise and Elizabeth are going to their town’s annual hayride. Tickets cost $8.00 for people 12 years old and older but only $5.00 for people 11 years old and younger. The total...
- Probability, Counting and Combinatorics
- Proportional Reasoning
- Sequences, Series and Patterns
According to “A History of Valentine’s Day Cards in America” by T.M. Wilson, in 1847 Esther Howland was the first to mass-produce Valentine’s Day cards. She made them out of lace, paint and expensive...
- Probability, Counting and Combinatorics
- Problem Solving (Misc.)
The 3rd Thursday in April (April 18, 2024) is National High Five Day! For National High Five Day, Ronnie’s class decides that everyone in the class should exchange one high five with each other person...
- Probability, Counting and Combinatorics
- Problem Solving (Misc.)
According to the North American Numbering Plan Administration (NANPA) standards, U.S. phone numbers contain a 3-digit area code, followed by a 3-digit exchange code and end in a 4-digit subscriber...