Q:
# What Are Benchmark Numbers in Math?

**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.

Credit:
Alex Pepperhill
CC-BY 2.0

Benchmark numbers can be used in a variety of estimation problems. They are often found on number lines and labeling known quantities, for example, a jar of pennies labeled with "100 pennies" next to a much larger unlabeled jar of pennies. In that example, knowing the volume that 100 pennies take up can help in estimating how many pennies are in the larger jar.

The concept of benchmark numbers comes from the generalized definition of a benchmark, which is a standard known quantity by which other quantities can be measured.

Learn more about Numbers-
Q:
## What Are "friendly Numbers" in Math?

A: Friendly numbers are individual numbers that make up part of what is known as a friendly pair. Friendly numbers always come in sets of two, and they are kn... Full Answer >Filed Under: -
Q:
## What Is the Hardest Math Problem?

A: The Millennium Prize Problems are a collection of the most difficult problems in mathematics, including the Riemann Hypothesis and the P versus NP Problem.... Full Answer >Filed Under: -
Q:
## What Is Phi in Math?

A: Phi is the 21st letter of the Greek alphabet and in mathematics, it is used as a symbol for the golden ratio. The golden ratio refers to a special number t... Full Answer >Filed Under: -
Q:
## What Does "prime" Mean in Math?

A: In mathematics, a prime number is any whole number greater than one that has no positive factors other than one and itself. For example, the number 17 is p... Full Answer >Filed Under: