Decimals Review 2024

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the answer directly below the other decimal points.

Front

What is the value of the digit in the tenths place in the number 4.56?

Back

The value of the digit in the tenths place (5) in the number 4.56 is 5 tenths or 0.5.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the answer directly below the other decimal points.

Front

What is the value of the digit 3 in the number 23.431?

Back

The value of the digit 3 in the number 23.431 is 3 hundredths.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over its place value (e.g., 0.75 = 75/100) and simplify if possible.

Front

What is the standard form of the number 0.0045?

Back

The standard form of the number 0.0045 is 4.5 x 10^-3.

Front

How do you write 45.67 in words?

Back

Forty-five and sixty-seven hundredths.

Front

What is the result of 1.2 + 3.45?

Back

The result of 1.2 + 3.45 is 4.65.

Front

What is the result of 5.5 - 2.3?

Back

The result of 5.5 - 2.3 is 3.2.