Rounding is a way to make a number simpler while keeping its value close to the original number. We use rounding to help estimate or work with numbers more easily.
When you round, the number changes but stays close to the original value.
To round to the nearest ten, look at the digit in the ones place. That digit tells you whether to round up or round down.
Always check the ones place to decide whether to round up or down.
Let’s practice rounding different numbers to the nearest ten using the rules.
Circle the ones digit when working on paper. This will help you see if the number rounds up or down.
We round numbers to make them easier to use in math. Rounding helps us estimate quickly, especially when adding, subtracting, or solving real-world problems.
Estimates do not give exact answers, but they are very useful for checking if an answer makes sense.