Workshop #2: Rounding and Estimation with Decimals

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. It often involves increasing or decreasing the last digit based on the value of the next digit.

Front

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

Back

To round a number 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 tenths place in a decimal number?

Back

The tenths place is the first digit to the right of the decimal point. For example, in 5.3, the 3 is in the tenths place.

Front

How do you write 'three hundred twenty-five thousand and four tenths' in numerical form?

Back

325,000.4

Front

What is the process of estimating a number?

Back

Estimating a number involves rounding it to a simpler value to make calculations easier, often used in mental math.

Front

How do you order decimal numbers from greatest to least?

Back

To order decimal numbers from greatest to least, compare the whole number parts first, then the tenths, hundredths, etc., until a difference is found.

Front

What is $5.67 rounded to the nearest dollar?

Back

$6.00

Front

What is the value of 9.21 when rounded to the nearest whole number?

Back

9.00

Front

How do you round 4.678 to the hundredths place?

Back

4.68 (look at the digit in the thousandths place, which is 8, and round up).

Front

What is the nearest ten cents to $3.47?

Back

$3.50