Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, typically represented with a decimal point.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add each column starting from the right, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract each column starting from the right, borrowing if necessary.

Front

What is the importance of place value in decimal addition and subtraction?

Back

Place value is crucial in decimal operations as it determines the value of each digit based on its position, ensuring accurate calculations.

Front

What is the result of adding 0.75 and 0.25?

Back

The result of adding 0.75 and 0.25 is 1.00.

Front

What is the result of subtracting 0.5 from 1.2?

Back

The result of subtracting 0.5 from 1.2 is 0.7.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the result of adding 1.5, 2.3, and 3.7?

Back

The result of adding 1.5, 2.3, and 3.7 is 7.5.

Front

What is the result of subtracting 2.5 from 5.0?

Back

The result of subtracting 2.5 from 5.0 is 2.5.

Front

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

Back

To round a decimal to the nearest whole number, look at the digit in the tenths place: if it's 5 or greater, round up; if it's less than 5, round down.