Rounding to nearest 10 and 100

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler or to make it easier to work with, typically by reducing the number of digits while keeping its value close to the original number.

Front

What does it mean to round to the nearest 10?

Back

Rounding to the nearest 10 means adjusting a number to the closest multiple of 10. If the last digit is 5 or more, round up; if it's less than 5, round down.

Front

What does it mean to round to the nearest 100?

Back

Rounding to the nearest 100 means adjusting a number to the closest multiple of 100. If the last two digits are 50 or more, round up; if they are less than 50, round down.

Front

Round 123 to the nearest 10.

Back

120

Front

Round 37 to the nearest 10.

Back

40

Front

Round 149 to the nearest 100.

Back

100

Front

Round 68 to the nearest 10.

Back

70

Front

If a number ends in 5, how do you round it to the nearest 10?

Back

If a number ends in 5, you round up to the next multiple of 10.

Front

If a number ends in 4, how do you round it to the nearest 10?

Back

If a number ends in 4, you round down to the previous multiple of 10.

Front

What is the rounded age of Mrs. Tall, who is 28 years old, to the nearest 10?

Back

30