Rounding Numbers to Estimate the Sum Flashcard

Front

What is the rhyme Mr. Will uses to round numbers?

Back

Five or greater, add one more; Four or below, let it go.

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was.

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.

Front

What is the estimated sum of 790 and 112 when rounded to the nearest 100?

Back

900.

Front

When rounding 456 to the nearest 100, what is the rounded number?

Back

500.

Front

When rounding 52 to the nearest 10, what is the rounded number?

Back

50.

Front

What is the estimated sum of 302 and 456 when rounded to the nearest 100?

Back

800.

Front

How do you determine whether to round up or down?

Back

If the digit to the right of the rounding place is 5 or greater, round up; if it is 4 or below, round down.

Front

What is the nearest hundred to 234?

Back

200.

Front

What is the nearest ten to 87?

Back

90.