Rounding Review

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 increasing or decreasing it to the nearest specified place value.

Front

What does it mean to round to the nearest ten?

Back

Rounding to the nearest ten means adjusting a number to the closest multiple of ten. 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 hundred?

Back

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

Front

Which number rounds to 70: 68, 72, or 62?

Back

68 and 72 round to 70, but 62 does not.

Front

How do you determine if a number rounds up or down?

Back

Look at the digit immediately to the right of the place value you are rounding to. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the result of rounding 291 to the nearest ten?

Back

290.

Front

What is the result of rounding 345 to the nearest hundred?

Back

300.

Front

How do you round a number using a number line?

Back

Identify the two closest multiples of the rounding place value on the number line, then determine which multiple the number is closer to.

Front

What is the nearest ten to 58?

Back

60.

Front

What is the nearest hundred to 293?

Back

300.