- Plane Geometry
- Problem Solving (Misc.)
Civil engineers design and build all sorts of infrastructure projects, such as bridges, buildings, roads and railways. Civil engineers must be precise and technical, creative and flexible to ensure...
- Sequences, Series and Patterns
What is the 20th term of the arithmetic sequence 13, 19, 25, 31, ...? The common difference is 19 – 13 = 6. Now that we know that, we can find the 20th term by 13 + 6(20 – 1). Thus, the 20th term is...
- Plane Geometry
- Probability, Counting and Combinatorics
- Problem Solving (Misc.)
March 14, or 3/14, is Pi Day because the first few digits of the number pi are 3.14! While the day celebrates the mathematical type of pi, it is a little more fun to celebrate the delicious pie that...
- Proportional Reasoning
- Sequences, Series and Patterns
- Solid Geometry
March 23 is National Puppy Day! Solve the problems below about two of the best things, math and puppies. Rufus the poodle is 1 year old and currently eats 1 dog biscuit per day. Every year, the number...
- Plane Geometry
The radius of circle N is 3 inches, and the radius of circle O is 4 inches. What is the radius of circle P whose area is the sum of the areas of circles N and O? The formula for the area of a circle...
- General Math
- Percents and Fractions
- Proportional Reasoning
- Solid Geometry
A town in South Dakota decides to have an “End of the Summer” pool party and invites all of the households in the town that have school aged children. Twenty-seven households are invited to the party...
- Algebraic Expressions and Equations
- General Math
- Plane Geometry
The Washington Monument in Washington, D.C. is an obelisk. An obelisk is a tall monument with four gently sloping sides and a pyramid shape on top. The obelisk structure first appeared in Ancient...