Rounding on a Number Line Flashcard

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, usually to the nearest ten, hundred, or other place value.

Front

What does it mean to round to the nearest ten?

Back

Rounding to the nearest ten means finding the closest multiple of ten to a given number.

Front

What does it mean to round to the nearest hundred?

Back

Rounding to the nearest hundred means finding the closest multiple of one hundred to a given number.

Front

What is the midpoint of a number line?

Back

The midpoint of a number line is the number that is exactly halfway between two other numbers.

Front

If a number is 45, to which ten does it round?

Back

45 rounds to 50 when rounding to the nearest ten.

Front

If a number is 42, to which ten does it round?

Back

42 rounds to 40 when rounding to the nearest ten.

Front

What is the rule for rounding up?

Back

If the digit to the right of the rounding place is 5 or greater, round up.

Front

What is the rule for rounding down?

Back

If the digit to the right of the rounding place is less than 5, round down.

Front

What number would round to 200 if rounding to the nearest hundred?

Back

Numbers from 150 to 249 round to 200 when rounding to the nearest hundred.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length.