A: ### Quick Answer

**A number story is a short story that illustrates a math equation, making it easier for young students to understand the equation involved.** For example, the equation 5+2=7 can be told as a story about five birds sitting on a tree that were joined by two more birds.

Teachers sometimes ask students to describe simple equations in the form of a number story. Besides increasing the child's understanding of the equation and encouraging creativity, the activity can also be used to improve a child's drawing skills by illustrating the story. Number stories are typically written or drawn for simple arithmetic operations such as addition and subtraction. Some examples of number stories include:

- There were two children at home and then one went out to play. Now there is only one child in the house.
- Andrew had four toy cars. His aunt gave him two more for Christmas. Now he has six.

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## What is a very hard math equation?

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Full Answer >**An extremely difficult math equation is the Jacobi-Madden equation, a**The Jacobi-Madden equation is considered a Diophantine equation.^{4}+ b^{4}+ c^{4}+ d^{4}= (a + b + c + d)^{4}where variables a, b, c and d can be any positive integer, negative integer or zero.Filed Under: - Q:
## What does interval mean in math?

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Full Answer >**In mathematics, the term "interval" usually refers to a statistical confidence interval.**Confidence intervals describe the likelihood of a statistical estimate being correct. Higher confidence intervals mean better chances that the estimate is correct, while lower confidence intervals mean better chances that the estimate is incorrect or flawed.Filed Under: - Q:
## What is the hardest math problem?

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Full Answer >**The Millennium Prize Problems are a collection of the most difficult problems in mathematics, including the Riemann Hypothesis and the P versus NP Problem.**Of the seven problems, only the Poincaré Conjecture has been solved. The mathematical problem that took the longest to solve was Fermat's Last Theorem.Filed Under: - Q:
## What are benchmark numbers in math?

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Full Answer >**In mathematics, benchmark numbers are predefined numbers that assist in estimation of an unknown quantity.**Benchmark numbers tend to be multiples of 5 or 10.Filed Under: