www.reference.com/world-view/double-fact-math-c6d1af900992a587

A double fact in math is a doubled value that is easy to remember, such as the equation "8 + 8 = 16." Any doubled number is a double fact, but double facts are most commonly used when they are small numbers, usually less than 12.

www.reference.com/article/competition-first-math-719383d9c7f675aa

The competition associated with First in Math is called the 24 Challenge, and it is a four-round game in which students in schools nationwide earn points determining patterns and solving math problems from a deck of cards. Both the number of cards played and the points ...

www.reference.com/world-view/4-squared-math-830fba9540375b9

Four squared in math is 16, as any number squared is multiplied by itself. Another way to express four squared is to say four to the second power.

www.reference.com/article/math-trend-742f84d9ee497d76

A trend in mathematics is a pattern in a set of data points. Knowing the trend allows outcomes to be predicted by a mathematical model. Estimating the trend of data requires a technique known as regression or curve fitting.

www.reference.com/article/abcya-math-97a6713540c8c586

ABCya! math consists of educational online games and mobile applications that aim at enhancing the numerical skills of children. ABCya! offers learning games with a focus on numbers and the practice of math facts.

www.reference.com/article/math-teacher-s-salary-48dc79a1b0117fe2

Employment website Indeed reports that the average salary of a mathematics teacher in the United States at any educational level is $55,000, as of 2014. For a high school math teacher, the average salary is $43,000.

www.reference.com/article/rules-rounding-math-f9f6490ee0cc1763

As a general rule of thumb, numbers should be rounded down if the final digit in a number is from 0 to 4, and rounded up if it's 5 to 9. Rounding sometimes involves more than one digit; some situations may call for rounding to the nearest hundred or thousand.