Rounding & Estimating 1

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, while keeping its value close to what it was.

Front

What does it mean to round to the nearest hundred?

Back

Rounding to the nearest hundred means finding the closest multiple of 100 to a given number.

Front

How do you determine which hundred a number is closest to?

Back

If the last two digits of the number are 50 or more, round up to the next hundred. If they are less than 50, round down to the previous hundred.

Front

Round 110 to the nearest hundred.

Back

100

Front

Round 348 to the nearest hundred.

Back

300

Front

What is rounding to the nearest ten?

Back

Rounding to the nearest ten means finding the closest multiple of 10 to a given number.

Front

How do you determine which ten a number is closest to?

Back

If the last digit of the number is 5 or more, round up to the next ten. If it is less than 5, round down to the previous ten.

Front

Round 326 to the nearest ten.

Back

330

Front

Round 1,456 to the nearest ten.

Back

1,460

Front

What is estimating in mathematics?

Back

Estimating is making an educated guess about a number's value, often by rounding.