Estimation

Front

What is estimation?

Back

Estimation is the process of finding an approximate value or number that is close to the exact amount, often used when exact calculations are not necessary.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified value, such as the nearest whole number, ten, hundred, etc.

Front

How do you round a number to the nearest whole number?

Back

To round to the nearest whole number, look at the digit in the tenths place. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the nearest whole number to 432.28?

Back

432.00

Front

When rounding to the nearest thousand, what is the rule?

Back

If the hundreds digit is 5 or more, round up to the next thousand; if it is less than 5, round down.

Front

What is the nearest thousand to 10,359?

Back

10,000

Front

What is a reasonable estimate for the total cost of a game system costing $299 and three games costing between $40 and $60 each?

Back

Around $450.

Front

What is the best estimate of how much money each granddaughter will receive if $153 is shared among three?

Back

$50.

Front

What is the nearest whole number to 699.50?

Back

700.00

Front

What is the purpose of estimation in math?

Back

Estimation helps to quickly assess the size or value of a number without needing exact calculations.