Adding and Subtracting Decimals

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.

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

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 value of 0.5 in cents?

Back

0.5 dollars is equal to 50 cents.

Front

If you have $6.00 and spend $0.50, how much do you have left?

Back

You have $5.50 left.

Front

What is the total of 31.6 grams and 45.2 grams?

Back

The total mass is 76.8 grams.

Front

How do you find the total weight of two objects?

Back

To find the total weight, add the weights of the two objects together.

Front

If one file is 30.30 gigabytes and the total size is 63 gigabytes, how do you find the size of the second file?

Back

Subtract the size of the first file from the total size: 63 - 30.30 = 32.7 gigabytes.

Front

What is the sum of 85.73 pounds and 73.42 pounds?

Back

The total weight is 159.15 pounds.

Front

If Gina scored 16.75 in total and 9.3 on the vault, how do you find her score on the balance beam?

Back

Subtract her vault score from the total score: 16.75 - 9.3 = 7.45.