What is the closest multiple of 10 to 25?
Rounding to the Nearest 10
Rounding is a way to simplify numbers. We round numbers to the nearest 10 by looking at the number to the right of the last digit. If the number to the right of the last digit is 5 or higher, round up. If the number to the right of the last digit is 4 or lower, round down. For example, if the number is 36, the number to the right of the last digit is 6. So, we round up and the number becomes 40.
rounding to the nearest 10
Rounding: the process of approximating a number to the nearest 10 by increasing or decreasing the number to the closest 10.
Place Value: the value of a digit based on its position in a number.
Estimating: when you make an approximation or guess of a number without doing any calculations.
Did you know?
Rounding to the nearest 10 is usually done using the 'rounding up' method, which means rounding any number to the next highest ten. In some countries such as Japan, the 'rounding down' method is used, meaning that numbers are rounded to the nearest multiple of 10 below. Rounding to the nearest 10 can also be done using a number line, which is a visual representation of the numbers that make up a range.
Work together in pairs: What is the number that is closest to 250 when rounded to the nearest 10?
Brain break: Draw a slice of pizza with legs and arms doing a hula dance
Work together in pairs: Q: What is the easiest way to round a number to the nearest 10?
If you have 34 apples, how many apples would you have if you rounded to the nearest 10?