Add/Subtract Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. 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 answer 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 answer directly below the other decimal points.

Front

What is the sum of 91.55 and 7.6?

Back

99.15

Front

What is the difference between 6.7 and 2.33?

Back

4.37

Front

What is the total mass of two rocks weighing 41.4 grams and 74.3 grams?

Back

115.7 grams

Front

If Nancy bought a 52.93 oz bag of chips and a 79.6 oz bag, how many ounces did she buy in total?

Back

132.53 ounces

Front

What is 15.07 minus 12.2?

Back

2.87

Front

What is the place value of the digit 5 in the number 3.45?

Back

The place value of 5 in 3.45 is 'five hundredths' or 0.05.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting the number to a nearby value that is simpler or easier to work with, often to a certain number of decimal places.