## Let's learn!

**What is a benchmark?**

In mathematics, benchmarks can be defined as the standard or reference point against which something can be measured, compared, or assessed.

Benchmark numbers are numbers against which other numbers or quantities can be estimated and compared. Benchmark numbers are usually multiples of 10 or 100.

Here’s a list of benchmark numbers.

## Let's sing!

*When there are big numbers to compare,*

*Don’t let them give you a scare!*

*Bring in the benchmarks, to be fair!*

## Let's do it!

Ask your children to use benchmark numbers to compare numbers or to estimate results of small operations they carry out in their daily life, such a as the total bill at a toy store, which toy is more/less expensive or within budget.