Decimal Addition and Subtraction

Front

What is a decimal?

Back

A decimal is a number that has a whole part and a fractional part, separated by a decimal point. For example, 3.14 is a decimal.

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 sum directly below the other decimal points.

Front

What is the sum of 9 and 12.36?

Back

21.36

Front

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

Back

Look at the digit to the right of the decimal point. If it is 5 or more, round up. If it is less than 5, round down.

Front

What is the result of rounding 3.872 to the nearest whole number?

Back

4

Front

What is the difference between two numbers?

Back

The difference is the result of subtracting one number from another.

Front

What is 94 - 4.8?

Back

89.2

Front

What is the difference of 7.05 and 4.6?

Back

2.45

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 difference directly below the other decimal points.

Front

What is the result of 435.2 - 24.55?

Back

410.65