Place Value and Decimals Review

Front

What is place value?

Back

Place value is the value of a digit based on its position in a number. For example, in the number 345, the digit 3 is in the hundreds place, so its value is 300.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part. For example, 0.75 is a decimal.

Front

What is the expanded form of a number?

Back

The expanded form of a number shows the value of each digit. For example, the expanded form of 345 is (3 x 100) + (4 x 10) + (5 x 1).

Front

How do you subtract decimals?

Back

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

Front

What is the standard form of a number?

Back

The standard form of a number is the way we usually write numbers, using digits. For example, the standard form of 'three hundred forty-five' is 345.

Front

What is the value of the digit 5 in the number 67.58?

Back

In the number 67.58, the digit 5 is in the tenths place, so its value is 0.5.

Front

What is the thousandths place?

Back

The thousandths place is the third digit to the right of the decimal point. For example, in the number 0.456, the digit 6 is in the thousandths place.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, 1/4 = 0.25.

Front

What is the difference between 50.00 and 24.83?

Back

The difference between 50.00 and 24.83 is 25.17.

Front

What is the value of the digit 2 in the number 473.521?

Back

In the number 473.521, the digit 2 is in the hundredths place, so its value is 0.02.