Rounding - Tens and Hundreds

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler or 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 greater, round up; if it is 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 greater, round up; if they are less than 50, round down.

Front

Round 907 to the nearest hundred.

Back

900

Front

Round 501 to the nearest ten.

Back

500

Front

Which number does NOT round to 20 when rounding to the nearest ten?

Back

25 does not round to 20; it rounds to 30.

Front

Round 774 to the nearest ten.

Back

770

Front

Round 312 to the nearest ten.

Back

310

Front

What is the rule for rounding numbers ending in 5?

Back

When rounding numbers that end in 5, you typically round up to the next whole number if the digit before 5 is odd, and round down if it is even.

Front

How do you determine which multiple of ten a number rounds to?

Back

To determine which multiple of ten a number rounds to, look at the last digit. If it is 0-4, round down; if it is 5-9, round up.