Estimating Values

Estimates help in computation and measuring. Estimation is not guessing, it involves some form of reasoning, computation, but not guessing.

There are a number of strategies you can use to estimate values. Here are some ways of estimating.

Example 1: For addition and subtraction

Example 2: Rounding to a “nice” number: 300 or 400.

Example 3: With a lot of numbers. Round to tens.

Example 4: Using compatible numbers